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185 vulnerabilities found for netty by netty
CVE-2026-59903 (GCVE-0-2026-59903)
Vulnerability from nvd – Published: 2026-08-17 17:56 – Updated: 2026-08-17 18:14
VLAI
EPSS
VEX
Title
Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.http.cors.CorsHandler setVaryHeader replaces application Vary headers such as Authorization or Cookie with Origin, allowing a caching proxy or CDN to reuse authenticated responses across users and disclose sensitive information. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 18:13 UTC
CWE
- CWE-524 - Use of Cache Containing Sensitive Information
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/pull/17213 | x_refsource_MISC |
| https://github.com/netty/netty/pull/17217 | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
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"id": "CVE-2026-59903",
"options": [
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"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-17T18:13:26.781284Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T18:14:01.121Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "netty",
"vendor": "netty",
"versions": [
{
"status": "affected",
"version": "\u003c 4.1.137.Final"
},
{
"status": "affected",
"version": "\u003e= 4.2.0.Final, \u003c 4.2.17.Final"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.http.cors.CorsHandler setVaryHeader replaces application Vary headers such as Authorization or Cookie with Origin, allowing a caching proxy or CDN to reuse authenticated responses across users and disclose sensitive information. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-524",
"description": "CWE-524: Use of Cache Containing Sensitive Information",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T17:56:28.726Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/netty/netty/security/advisories/GHSA-8c42-7qj2-3j46",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-8c42-7qj2-3j46"
},
{
"name": "https://github.com/netty/netty/pull/17213",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/pull/17213"
},
{
"name": "https://github.com/netty/netty/pull/17217",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/pull/17217"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final"
}
],
"source": {
"advisory": "GHSA-8c42-7qj2-3j46",
"discovery": "UNKNOWN"
},
"title": "Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-59903",
"datePublished": "2026-08-17T17:56:28.726Z",
"dateReserved": "2026-07-07T16:40:07.984Z",
"dateUpdated": "2026-08-17T18:14:01.121Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-59902 (GCVE-0-2026-59902)
Vulnerability from nvd – Published: 2026-08-17 17:48 – Updated: 2026-08-17 17:48
VLAI
EPSS
VEX
Title
Netty: Memory Exhaustion in SctpMessageCompletionHandler
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.sctp.SctpMessageCompletionHandler limits incomplete messages and fragment counts but not maxBufferedBytes, allowing unauthenticated peers to exhaust memory with large SCTP fragments. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
Severity
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/pull/17213 | x_refsource_MISC |
| https://github.com/netty/netty/pull/17217 | x_refsource_MISC |
| https://github.com/netty/netty/commit/1b5abc6443b… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"product": "netty",
"vendor": "netty",
"versions": [
{
"status": "affected",
"version": "\u003c 4.1.137.Final"
},
{
"status": "affected",
"version": "\u003e= 4.2.0.Final, \u003c 4.2.17.Final"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.sctp.SctpMessageCompletionHandler limits incomplete messages and fragment counts but not maxBufferedBytes, allowing unauthenticated peers to exhaust memory with large SCTP fragments. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T17:48:55.663Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/netty/netty/security/advisories/GHSA-2qj4-mmr9-4v2f",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-2qj4-mmr9-4v2f"
},
{
"name": "https://github.com/netty/netty/pull/17213",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/pull/17213"
},
{
"name": "https://github.com/netty/netty/pull/17217",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/pull/17217"
},
{
"name": "https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final"
}
],
"source": {
"advisory": "GHSA-2qj4-mmr9-4v2f",
"discovery": "UNKNOWN"
},
"title": "Netty: Memory Exhaustion in SctpMessageCompletionHandler"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-59902",
"datePublished": "2026-08-17T17:48:55.663Z",
"dateReserved": "2026-07-07T16:40:07.984Z",
"dateUpdated": "2026-08-17T17:48:55.663Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-73508 (GCVE-0-2026-73508)
Vulnerability from nvd – Published: 2026-08-13 14:27 – Updated: 2026-08-13 17:52
VLAI
EPSS
VEX
Title
Netty: Memory Leak in DNS Record Decoder via Malformed Domain Names
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.dns.AbstractDnsRecord, io.netty.handler.codec.dns.DefaultDnsRecordDecoder.decodeRecord(), and io.netty.handler.codec.dns.DnsCodecUtil.decompressDomainName() failed to release retained or newly allocated ByteBuf objects when IDN.toASCII() or encodeDomainName() rejected a malformed domain name, allowing unauthenticated remote DNS packets to leak direct memory incrementally until denial of service. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 17:49 UTC
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-73508",
"options": [
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},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-13T17:49:08.822510Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-13T17:52:58.403Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "netty",
"vendor": "netty",
"versions": [
{
"status": "affected",
"version": "\u003c 4.1.136.Final"
},
{
"status": "affected",
"version": "\u003e= 4.2.0.Final, \u003c 4.2.16.Final"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.dns.AbstractDnsRecord, io.netty.handler.codec.dns.DefaultDnsRecordDecoder.decodeRecord(), and io.netty.handler.codec.dns.DnsCodecUtil.decompressDomainName() failed to release retained or newly allocated ByteBuf objects when IDN.toASCII() or encodeDomainName() rejected a malformed domain name, allowing unauthenticated remote DNS packets to leak direct memory incrementally until denial of service. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-772",
"description": "CWE-772: Missing Release of Resource after Effective Lifetime",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-13T14:27:20.298Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/netty/netty/security/advisories/GHSA-mfg7-5gfp-c4w3",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-mfg7-5gfp-c4w3"
},
{
"name": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b"
},
{
"name": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final"
}
],
"source": {
"advisory": "GHSA-mfg7-5gfp-c4w3",
"discovery": "UNKNOWN"
},
"title": "Netty: Memory Leak in DNS Record Decoder via Malformed Domain Names"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-73508",
"datePublished": "2026-08-13T14:27:20.298Z",
"dateReserved": "2026-08-12T19:00:33.736Z",
"dateUpdated": "2026-08-13T17:52:58.403Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-73507 (GCVE-0-2026-73507)
Vulnerability from nvd – Published: 2026-08-13 14:25 – Updated: 2026-08-15 03:16
VLAI
EPSS
VEX
Title
Netty: Denial of Service in XmlFrameDecoder via CPU Exhaustion
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.xml.XmlFrameDecoder.decode() failed to preserve closing-tag parser state across invocations, so an unauthenticated remote attacker could trickle-feed repeated </ sequences that repeatedly rescanned the accumulated buffer and exhausted an EventLoop thread's CPU, causing denial of service with a maxFrameLength of 1 MB. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-15 03:15 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-73507",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-15T03:15:55.304036Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-15T03:16:06.291Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "netty",
"vendor": "netty",
"versions": [
{
"status": "affected",
"version": "\u003c 4.1.136.Final"
},
{
"status": "affected",
"version": "\u003e= 4.2.0.Final, \u003c 4.2.16.Final"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.xml.XmlFrameDecoder.decode() failed to preserve closing-tag parser state across invocations, so an unauthenticated remote attacker could trickle-feed repeated \u003c/ sequences that repeatedly rescanned the accumulated buffer and exhausted an EventLoop thread\u0027s CPU, causing denial of service with a maxFrameLength of 1 MB. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-13T14:25:34.073Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/netty/netty/security/advisories/GHSA-v74w-7mr3-4qg3",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-v74w-7mr3-4qg3"
},
{
"name": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b"
},
{
"name": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final"
},
{
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CVE-2026-56818 (GCVE-0-2026-56818)
Vulnerability from nvd – Published: 2026-08-07 17:14 – Updated: 2026-08-08 03:01
VLAI
EPSS
VEX
Title
Netty: RedisArrayAggregator max-elements failure leaves retained partial aggregate state
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, the RedisArrayAggregator Redis codec clears retained partial aggregate state when the maxNestedArrayDepth limit is exceeded, but it does not clear the same state when the sibling maxElements limit is exceeded. A peer can start a valid RESP array, send a bulk string child, then send a nested array header longer than the configured maxElements. Netty throws a decoder exception in decodeRedisArrayHeader, but the existing partial aggregate remains retained in the handler. If the application leaves the channel alive after the exception, later messages are still consumed into the pre-error aggregate, allowing an unauthenticated peer to keep attacker-controlled aggregate state alive across a security-limit exception and pin retained pooled buffers. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-08 03:00 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/pull/17065 | x_refsource_MISC |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
Impacted products
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CVE-2026-59898 (GCVE-0-2026-59898)
Vulnerability from nvd – Published: 2026-07-29 18:02 – Updated: 2026-07-30 15:19
VLAI
EPSS
VEX
Title
Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 (or V08) handshaker by sending `Sec-WebSocket-Version: 7` and omitting `Connection: Upgrade` / `Upgrade: websocket` headers, completing a protocol switch that a proxy would not recognize as an Upgrade request and enabling HTTP request smuggling / protocol-confusion attacks. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 13:55 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-59920 (GCVE-0-2026-59920)
Vulnerability from nvd – Published: 2026-07-29 17:32 – Updated: 2026-07-29 19:24
VLAI
EPSS
VEX
Title
Netty: STOMP CONNECT Frame Header Injection
Summary
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's STOMP encoder ( StompSubframeEncoder ) does not escape or validate header values in CONNECT and CONNECTED frames, so raw newline ( \n ) characters in a header value are written directly to the wire, allowing an attacker who controls a header value to inject additional STOMP headers. This happens because the encoder intentionally skips escaping for CONNECT/CONNECTED frames per the STOMP 1.2 specification but never rejects the raw newlines, and since a broker parses each line as a separate header, an attacker controlling a value such as a user-supplied login or passcode can overwrite connection parameters or add authentication/role headers to bypass authentication or escalate privileges (the actual impact is broker-dependent). The issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 19:01 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-59919 (GCVE-0-2026-59919)
Vulnerability from nvd – Published: 2026-07-29 17:37 – Updated: 2026-07-29 18:06
VLAI
EPSS
VEX
Title
Netty: HAProxy V1 Protocol CRLF Injection via AF_UNIX Address
Summary
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's HAProxy encoder ( HAProxyMessageEncoder ) writes AF_UNIX source and destination socket addresses into the HAProxy V1 text protocol without validating them for CRLF characters, so an attacker who controls an AF_UNIX address can inject \r\n sequences and split the single PROXY header into multiple lines. This is possible because the V1 protocol uses CRLF as its line terminator and, unlike IPv4/IPv6 addresses whose format checks implicitly reject CRLF, AF_UNIX addresses are only validated for length (up to 108 bytes), allowing a forged second PROXY header line that spoofs the client source/destination IP to a downstream server or load balancer. The issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 18:05 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-59901 (GCVE-0-2026-59901)
Vulnerability from nvd – Published: 2026-07-29 17:48 – Updated: 2026-07-29 18:09
VLAI
EPSS
VEX
Title
Netty Bzip2Decoder: Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the `Bzip2Decoder` handler in Netty's compression codec pipeline is vulnerable to a denial-of-service attack through a malformed bzip2 stream that permanently captures the event-loop thread in an infinite loop. The vulnerability exists in the run-length encoding (RLE) state machine within [`Bzip2BlockDecompressor.read()`]. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 18:09 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-59900 (GCVE-0-2026-59900)
Vulnerability from nvd – Published: 2026-07-29 17:58 – Updated: 2026-07-29 18:07
VLAI
EPSS
VEX
Title
Netty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer (`Http2StreamFrameToHttpObjectCodec` and `InboundHttp2ToHttpAdapter`) fails to deduplicate or validate `Host` headers when an HTTP/2 client supplies both the `:authority` pseudo-header and a literal `host` header in a single HEADERS frame. The translator maps `:authority` to `Host` and separately copies the literal `host` header, producing an `HttpRequest` object containing two `Host` headers with attacker-controlled differing values. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 18:07 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-59899 (GCVE-0-2026-59899)
Vulnerability from nvd – Published: 2026-07-29 18:00 – Updated: 2026-07-30 14:01
VLAI
EPSS
VEX
Title
Netty HttpContentEncoder: Unbounded Per-Connection Queue Growth via HTTP/1.1 Pipelining Leads to Denial of Service
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, `HttpContentEncoder` (the superclass of the production handler `HttpContentCompressor`) maintains a per-channel `ArrayDeque<CharSequence>` named `acceptEncodingQueue` that accumulates attacker-controlled data without any size limit. The queue is filled on the I/O thread for every inbound HTTP request and drained only when the application later writes a non-1xx response. This creates a resource exhaustion vulnerability when an attacker exploits HTTP/1.1 pipelining to flood the connection with requests faster than the application produces responses. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 14:01 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-56822 (GCVE-0-2026-56822)
Vulnerability from nvd – Published: 2026-07-28 23:17 – Updated: 2026-07-30 03:55
VLAI
EPSS
VEX
Title
Netty: TOCTOU in OcspServerCertificateValidator
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator forwards the SslHandshakeCompletionEvent before the asynchronous OCSP validation completes. This allows the client's downstream handlers to send sensitive application data (e.g., HTTP requests) to a revoked server before the channel is closed by the OCSP check. n io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered, when an SslHandshakeCompletionEvent is received, the validator immediately calls ctx.fireUserEventTriggered(evt). It then initiates an asynchronous OCSP query using OcspClient.query. Because the handshake completion event is forwarded immediately, downstream handlers in the client's pipeline are notified that the TLS handshake is successful. They may then begin reading and processing incoming application data or sending outgoing data. If the OCSP response later indicates the server's certificate is REVOKED, the validator closes the channel, but by this time, the client may have already leaked sensitive data to a revoked server or processed malicious responses from it. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 00:00 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-56821 (GCVE-0-2026-56821)
Vulnerability from nvd – Published: 2026-07-28 23:07 – Updated: 2026-07-31 16:12
VLAI
EPSS
VEX
Title
Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 03:55 UTC
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-59921 (GCVE-0-2026-59921)
Vulnerability from nvd – Published: 2026-07-28 22:28 – Updated: 2026-07-29 17:32
VLAI
EPSS
VEX
Title
Netty: CRLF Injection via Multipart Filename in Netty HttpPostRequestEncoder
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without validating or sanitizing CRLF characters (\r\n). Since MIME headers are delimited by CRLF, an attacker who controls the filename can inject arbitrary MIME headers into the multipart body part. The root cause is that neither the encoder nor the FileUpload implementations' setFilename() methods, which only check for null, neutralize CRLF characters before the filename is embedded into the header. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
5.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 12:49 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-56820 (GCVE-0-2026-56820)
Vulnerability from nvd – Published: 2026-07-21 22:26 – Updated: 2026-07-24 20:12
VLAI
EPSS
VEX
Title
Netty: Missing CertificateID Validation in OCSP Response Allows Replay Attacks
Summary
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and prior to 4.1.135.Final, `OcspClient` does not validate that the `CertificateID` in an OCSP response matches the requested `CertificateID`, which can lead to replay attack. `OcspClient.validateResponse` accepts a legitimately signed `GOOD` status response for an unrelated certificate issued by the same CA, allowing bypass of revocation checks for another certificate. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-24 03:55 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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},
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CVE-2026-56819 (GCVE-0-2026-56819)
Vulnerability from nvd – Published: 2026-07-21 22:11 – Updated: 2026-07-23 13:55
VLAI
EPSS
VEX
Title
Netty: HTTP/2 decompression leaks ByteBuf reference count when the decompressor channel is already closed (Direct memory leak / OOM DoS)
Summary
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, a remote unauthenticated peer can leak one direct `ByteBuf` per HTTP/2 `DATA` frame in applications that enable HTTP/2 content decompression via `DelegatingDecompressorFrameListener`. When a `DATA` frame is processed for a stream whose decompressor has already been closed, `Http2Decompressor.decompress(...)` calls `decompressor.writeInbound(data.retain())` and does not release the retained buffer on the error path, eventually exhausting direct memory and crashing the JVM. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 13:55 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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},
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{
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"url": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final"
},
{
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"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final"
}
],
"source": {
"advisory": "GHSA-93wv-jw9v-4972",
"discovery": "UNKNOWN"
},
"title": "Netty: HTTP/2 decompression leaks ByteBuf reference count when the decompressor channel is already closed (Direct memory leak / OOM DoS)"
}
},
"cveMetadata": {
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"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-56819",
"datePublished": "2026-07-21T22:11:17.470Z",
"dateReserved": "2026-06-23T14:55:09.116Z",
"dateUpdated": "2026-07-23T13:55:29.793Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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CVE-2026-59903 (GCVE-0-2026-59903)
Vulnerability from cvelistv5 – Published: 2026-08-17 17:56 – Updated: 2026-08-17 18:14
VLAI
EPSS
VEX
Title
Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.http.cors.CorsHandler setVaryHeader replaces application Vary headers such as Authorization or Cookie with Origin, allowing a caching proxy or CDN to reuse authenticated responses across users and disclose sensitive information. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 18:13 UTC
CWE
- CWE-524 - Use of Cache Containing Sensitive Information
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/pull/17213 | x_refsource_MISC |
| https://github.com/netty/netty/pull/17217 | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
{
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{
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{
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}
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"vendor": "netty",
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}
]
}
],
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}
],
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"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
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}
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{
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"x_refsource_CONFIRM"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-8c42-7qj2-3j46"
},
{
"name": "https://github.com/netty/netty/pull/17213",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/pull/17213"
},
{
"name": "https://github.com/netty/netty/pull/17217",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/pull/17217"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final",
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"x_refsource_MISC"
],
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},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final",
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"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final"
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],
"source": {
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"discovery": "UNKNOWN"
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"title": "Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite"
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},
"dataType": "CVE_RECORD",
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CVE-2026-59902 (GCVE-0-2026-59902)
Vulnerability from cvelistv5 – Published: 2026-08-17 17:48 – Updated: 2026-08-17 17:48
VLAI
EPSS
VEX
Title
Netty: Memory Exhaustion in SctpMessageCompletionHandler
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.sctp.SctpMessageCompletionHandler limits incomplete messages and fragment counts but not maxBufferedBytes, allowing unauthenticated peers to exhaust memory with large SCTP fragments. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
Severity
7.5 (High)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/pull/17213 | x_refsource_MISC |
| https://github.com/netty/netty/pull/17217 | x_refsource_MISC |
| https://github.com/netty/netty/commit/1b5abc6443b… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
{
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{
"product": "netty",
"vendor": "netty",
"versions": [
{
"status": "affected",
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},
{
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}
]
}
],
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}
],
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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}
}
],
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"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en",
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}
]
}
],
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/netty/netty/security/advisories/GHSA-2qj4-mmr9-4v2f",
"tags": [
"x_refsource_CONFIRM"
],
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},
{
"name": "https://github.com/netty/netty/pull/17213",
"tags": [
"x_refsource_MISC"
],
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},
{
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"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/pull/17217"
},
{
"name": "https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final"
}
],
"source": {
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"discovery": "UNKNOWN"
},
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}
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"dateReserved": "2026-07-07T16:40:07.984Z",
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"state": "PUBLISHED"
},
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"dataVersion": "5.2"
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CVE-2026-73508 (GCVE-0-2026-73508)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:27 – Updated: 2026-08-13 17:52
VLAI
EPSS
VEX
Title
Netty: Memory Leak in DNS Record Decoder via Malformed Domain Names
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.dns.AbstractDnsRecord, io.netty.handler.codec.dns.DefaultDnsRecordDecoder.decodeRecord(), and io.netty.handler.codec.dns.DnsCodecUtil.decompressDomainName() failed to release retained or newly allocated ByteBuf objects when IDN.toASCII() or encodeDomainName() rejected a malformed domain name, allowing unauthenticated remote DNS packets to leak direct memory incrementally until denial of service. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 17:49 UTC
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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{
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{
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"id": "CVE-2026-73508",
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{
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},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-13T17:49:08.822510Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
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{
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"vendor": "netty",
"versions": [
{
"status": "affected",
"version": "\u003c 4.1.136.Final"
},
{
"status": "affected",
"version": "\u003e= 4.2.0.Final, \u003c 4.2.16.Final"
}
]
}
],
"descriptions": [
{
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}
],
"metrics": [
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"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
}
}
],
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{
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"description": "CWE-772: Missing Release of Resource after Effective Lifetime",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
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{
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"x_refsource_CONFIRM"
],
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},
{
"name": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b",
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"x_refsource_MISC"
],
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},
{
"name": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final"
}
],
"source": {
"advisory": "GHSA-mfg7-5gfp-c4w3",
"discovery": "UNKNOWN"
},
"title": "Netty: Memory Leak in DNS Record Decoder via Malformed Domain Names"
}
},
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"dateReserved": "2026-08-12T19:00:33.736Z",
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CVE-2026-73507 (GCVE-0-2026-73507)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:25 – Updated: 2026-08-15 03:16
VLAI
EPSS
VEX
Title
Netty: Denial of Service in XmlFrameDecoder via CPU Exhaustion
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.xml.XmlFrameDecoder.decode() failed to preserve closing-tag parser state across invocations, so an unauthenticated remote attacker could trickle-feed repeated </ sequences that repeatedly rescanned the accumulated buffer and exhausted an EventLoop thread's CPU, causing denial of service with a maxFrameLength of 1 MB. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-15 03:15 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
{
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{
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{
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},
{
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}
],
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"timestamp": "2026-08-15T03:15:55.304036Z",
"version": "2.0.3"
},
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}
}
],
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},
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}
],
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"vendor": "netty",
"versions": [
{
"status": "affected",
"version": "\u003c 4.1.136.Final"
},
{
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"version": "\u003e= 4.2.0.Final, \u003c 4.2.16.Final"
}
]
}
],
"descriptions": [
{
"lang": "en",
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}
],
"metrics": [
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
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}
]
}
],
"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/netty/netty/security/advisories/GHSA-v74w-7mr3-4qg3",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-v74w-7mr3-4qg3"
},
{
"name": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b"
},
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CVE-2026-56818 (GCVE-0-2026-56818)
Vulnerability from cvelistv5 – Published: 2026-08-07 17:14 – Updated: 2026-08-08 03:01
VLAI
EPSS
VEX
Title
Netty: RedisArrayAggregator max-elements failure leaves retained partial aggregate state
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, the RedisArrayAggregator Redis codec clears retained partial aggregate state when the maxNestedArrayDepth limit is exceeded, but it does not clear the same state when the sibling maxElements limit is exceeded. A peer can start a valid RESP array, send a bulk string child, then send a nested array header longer than the configured maxElements. Netty throws a decoder exception in decodeRedisArrayHeader, but the existing partial aggregate remains retained in the handler. If the application leaves the channel alive after the exception, later messages are still consumed into the pre-error aggregate, allowing an unauthenticated peer to keep attacker-controlled aggregate state alive across a security-limit exception and pin retained pooled buffers. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-08 03:00 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/pull/17065 | x_refsource_MISC |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
Impacted products
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CVE-2026-59898 (GCVE-0-2026-59898)
Vulnerability from cvelistv5 – Published: 2026-07-29 18:02 – Updated: 2026-07-30 15:19
VLAI
EPSS
VEX
Title
Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 (or V08) handshaker by sending `Sec-WebSocket-Version: 7` and omitting `Connection: Upgrade` / `Upgrade: websocket` headers, completing a protocol switch that a proxy would not recognize as an Upgrade request and enabling HTTP request smuggling / protocol-confusion attacks. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 13:55 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-59899 (GCVE-0-2026-59899)
Vulnerability from cvelistv5 – Published: 2026-07-29 18:00 – Updated: 2026-07-30 14:01
VLAI
EPSS
VEX
Title
Netty HttpContentEncoder: Unbounded Per-Connection Queue Growth via HTTP/1.1 Pipelining Leads to Denial of Service
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, `HttpContentEncoder` (the superclass of the production handler `HttpContentCompressor`) maintains a per-channel `ArrayDeque<CharSequence>` named `acceptEncodingQueue` that accumulates attacker-controlled data without any size limit. The queue is filled on the I/O thread for every inbound HTTP request and drained only when the application later writes a non-1xx response. This creates a resource exhaustion vulnerability when an attacker exploits HTTP/1.1 pipelining to flood the connection with requests faster than the application produces responses. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 14:01 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-59900 (GCVE-0-2026-59900)
Vulnerability from cvelistv5 – Published: 2026-07-29 17:58 – Updated: 2026-07-29 18:07
VLAI
EPSS
VEX
Title
Netty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, Netty's HTTP/2-to-HTTP/1.x translation layer (`Http2StreamFrameToHttpObjectCodec` and `InboundHttp2ToHttpAdapter`) fails to deduplicate or validate `Host` headers when an HTTP/2 client supplies both the `:authority` pseudo-header and a literal `host` header in a single HEADERS frame. The translator maps `:authority` to `Host` and separately copies the literal `host` header, producing an `HttpRequest` object containing two `Host` headers with attacker-controlled differing values. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 18:07 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-59901 (GCVE-0-2026-59901)
Vulnerability from cvelistv5 – Published: 2026-07-29 17:48 – Updated: 2026-07-29 18:09
VLAI
EPSS
VEX
Title
Netty Bzip2Decoder: Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the `Bzip2Decoder` handler in Netty's compression codec pipeline is vulnerable to a denial-of-service attack through a malformed bzip2 stream that permanently captures the event-loop thread in an infinite loop. The vulnerability exists in the run-length encoding (RLE) state machine within [`Bzip2BlockDecompressor.read()`]. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 18:09 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-59919 (GCVE-0-2026-59919)
Vulnerability from cvelistv5 – Published: 2026-07-29 17:37 – Updated: 2026-07-29 18:06
VLAI
EPSS
VEX
Title
Netty: HAProxy V1 Protocol CRLF Injection via AF_UNIX Address
Summary
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's HAProxy encoder ( HAProxyMessageEncoder ) writes AF_UNIX source and destination socket addresses into the HAProxy V1 text protocol without validating them for CRLF characters, so an attacker who controls an AF_UNIX address can inject \r\n sequences and split the single PROXY header into multiple lines. This is possible because the V1 protocol uses CRLF as its line terminator and, unlike IPv4/IPv6 addresses whose format checks implicitly reject CRLF, AF_UNIX addresses are only validated for length (up to 108 bytes), allowing a forged second PROXY header line that spoofs the client source/destination IP to a downstream server or load balancer. The issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 18:05 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-59920 (GCVE-0-2026-59920)
Vulnerability from cvelistv5 – Published: 2026-07-29 17:32 – Updated: 2026-07-29 19:24
VLAI
EPSS
VEX
Title
Netty: STOMP CONNECT Frame Header Injection
Summary
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.136.Final and 4.2.16.Final, Netty's STOMP encoder ( StompSubframeEncoder ) does not escape or validate header values in CONNECT and CONNECTED frames, so raw newline ( \n ) characters in a header value are written directly to the wire, allowing an attacker who controls a header value to inject additional STOMP headers. This happens because the encoder intentionally skips escaping for CONNECT/CONNECTED frames per the STOMP 1.2 specification but never rejects the raw newlines, and since a broker parses each line as a separate header, an attacker controlling a value such as a user-supplied login or passcode can overwrite connection parameters or add authentication/role headers to bypass authentication or escalate privileges (the actual impact is broker-dependent). The issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 19:01 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-56822 (GCVE-0-2026-56822)
Vulnerability from cvelistv5 – Published: 2026-07-28 23:17 – Updated: 2026-07-30 03:55
VLAI
EPSS
VEX
Title
Netty: TOCTOU in OcspServerCertificateValidator
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator forwards the SslHandshakeCompletionEvent before the asynchronous OCSP validation completes. This allows the client's downstream handlers to send sensitive application data (e.g., HTTP requests) to a revoked server before the channel is closed by the OCSP check. n io.netty.handler.ssl.ocsp.OcspServerCertificateValidator#userEventTriggered, when an SslHandshakeCompletionEvent is received, the validator immediately calls ctx.fireUserEventTriggered(evt). It then initiates an asynchronous OCSP query using OcspClient.query. Because the handshake completion event is forwarded immediately, downstream handlers in the client's pipeline are notified that the TLS handshake is successful. They may then begin reading and processing incoming application data or sending outgoing data. If the OCSP response later indicates the server's certificate is REVOKED, the validator closes the channel, but by this time, the client may have already leaked sensitive data to a revoked server or processed malicious responses from it. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 00:00 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-56821 (GCVE-0-2026-56821)
Vulnerability from cvelistv5 – Published: 2026-07-28 23:07 – Updated: 2026-07-31 16:12
VLAI
EPSS
VEX
Title
Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the OcspServerCertificateValidator flags an out-of-date OCSP response but does not stop processing it, so an expired GOOD response is still reported as VALID, letting an on-path attacker replay a stale GOOD response to bypass revocation of a since-revoked certificate. Exploitation can lead to certificate revocation bypass via replay of an expired OCSP response. Any application using OcspServerCertificateValidator is affected; a revoked certificate can be accepted. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 03:55 UTC
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-59921 (GCVE-0-2026-59921)
Vulnerability from cvelistv5 – Published: 2026-07-28 22:28 – Updated: 2026-07-29 17:32
VLAI
EPSS
VEX
Title
Netty: CRLF Injection via Multipart Filename in Netty HttpPostRequestEncoder
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without validating or sanitizing CRLF characters (\r\n). Since MIME headers are delimited by CRLF, an attacker who controls the filename can inject arbitrary MIME headers into the multipart body part. The root cause is that neither the encoder nor the FileUpload implementations' setFilename() methods, which only check for null, neutralize CRLF characters before the filename is embedded into the header. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
5.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 12:49 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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