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Vulnerability from cleanstart
Package sonarqube version 26.4.0.121862-r0 fixes 8 vulnerabilities: CVE-2025-68161, CVE-2026-34479, CVE-2026-33870, CVE-2026-33871, CVE-2025-48924...
| URL | Type | |
|---|---|---|
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"details": "Package sonarqube version 26.4.0.121862-r0 fixes 8 vulnerabilities: CVE-2025-68161, CVE-2026-34479, CVE-2026-33870, CVE-2026-33871, CVE-2025-48924...",
"id": "CLEANSTART-2026-RI78634",
"modified": "2026-07-30T09:33:11Z",
"published": "2026-07-30T07:10:53Z",
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"ghsa-h383-gmxw-35v2",
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CVE-2025-48924 (GCVE-0-2025-48924)
Vulnerability from cvelistv5 – Published: 2025-07-11 14:56 – Updated: 2025-11-04 22:06- CWE-674 - Uncontrolled Recursion
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Commons Lang |
Affected:
2.0 , ≤ 2.6
(maven)
|
|
| Apache Software Foundation | Apache Commons Lang |
Affected:
3.0 , < 3.18.0
(maven)
|
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CVE-2025-68161 (GCVE-0-2025-68161)
Vulnerability from cvelistv5 – Published: 2025-12-18 20:47 – Updated: 2026-04-10 16:18- CWE-297 - Improper Validation of Certificate with Host Mismatch
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Log4j Core |
Affected:
2.0-beta9 , < 2.25.3
(maven)
Affected: 3.0.0-alpha1 , ≤ 3.0.0-beta3 (maven) cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* |
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CVE-2026-33870 (GCVE-0-2026-33870)
Vulnerability from cvelistv5 – Published: 2026-03-27 19:54 – Updated: 2026-07-15 02:48- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
| Vendor | Product | Version | |
|---|---|---|---|
| netty | netty |
Affected:
< 4.1.132.Final
Affected: >= 4.2.0.Alpha1, < 4.2.10.Final |
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-9 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Red Hat AMQ Broker 7.12.7 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:amq_broker:7.12 |
|
| Red Hat | Red Hat AMQ Broker 7.13.5 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:amq_broker:7.13 |
|
| Red Hat | Red Hat AMQ Broker 7.14.0 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:amq_broker:7.14 |
|
| Red Hat | Red Hat Build of Apache Camel 4.14 for Quarkus 3.27 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:apache_camel_quarkus:3.27 |
|
| Red Hat | Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:apache_camel_spring_boot:4.18 |
|
| Red Hat | Red Hat build of Quarkus 3.20.6 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:quarkus:3.20::el8 |
|
| Red Hat | Red Hat build of Quarkus 3.27.3 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:quarkus:3.27::el8 |
|
| Red Hat | Red Hat Data Grid 8.6.1 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 |
Unaffected:
0:4.1.132-1.Final_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 |
Unaffected:
0:4.1.132-1.Final_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9 |
|
| Red Hat | Streams for Apache Kafka 2.9.4 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:amq_streams:2.9::el9 |
|
| Red Hat | Streams for Apache Kafka 3.2.0 |
cpe:/a:redhat:amq_streams:3.2::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776756834 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776716842 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776717247 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776796445 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Logging Subsystem for Red Hat OpenShift |
cpe:/a:redhat:logging:5 |
|
| Red Hat | OpenShift Serverless |
cpe:/a:redhat:serverless:1 |
|
| Red Hat | Red Hat AMQ Clients |
cpe:/a:redhat:amq_clients:2023 |
|
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 |
cpe:/a:redhat:camel_quarkus:3 |
|
| Red Hat | Red Hat build of Apache Camel - HawtIO 4 |
cpe:/a:redhat:apache_camel_hawtio:4 |
|
| Red Hat | Red Hat build of Apicurio Registry 2 |
cpe:/a:redhat:service_registry:2 |
|
| Red Hat | Red Hat build of Apicurio Registry 3 |
cpe:/a:redhat:apicurio_registry:3 |
|
| Red Hat | Red Hat build of Debezium 3 |
cpe:/a:redhat:debezium:3 |
|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|
| Red Hat | Red Hat build of OptaPlanner 8 |
cpe:/a:redhat:optaplanner:::el6 |
|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat Process Automation 7 |
cpe:/a:redhat:jboss_enterprise_bpms_platform:7 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7 |
|
| Red Hat | streams for Apache Kafka 3 |
cpe:/a:redhat:amq_streams:3 |
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CVE-2026-33871 (GCVE-0-2026-33871)
Vulnerability from cvelistv5 – Published: 2026-03-27 19:55 – Updated: 2026-07-15 01:05- CWE-770 - Allocation of Resources Without Limits or Throttling
| Vendor | Product | Version | |
|---|---|---|---|
| netty | netty |
Affected:
< 4.1.132.Final
Affected: >= 4.2.0.Alpha1, < 4.2.10.Final |
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-9 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Red Hat AMQ Broker 7.12.7 |
Unaffected:
codec-http2 , < *
(rpm)
cpe:/a:redhat:amq_broker:7.12 |
|
| Red Hat | Red Hat AMQ Broker 7.13.5 |
Unaffected:
codec-http2 , < *
(rpm)
cpe:/a:redhat:amq_broker:7.13 |
|
| Red Hat | Red Hat AMQ Broker 7.14.0 |
Unaffected:
codec-http , < *
(rpm)
Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:amq_broker:7.14 |
|
| Red Hat | Red Hat Build of Apache Camel 4.14 for Quarkus 3.27 |
Unaffected:
codec-http2 , < *
(rpm)
cpe:/a:redhat:apache_camel_quarkus:3.27 |
|
| Red Hat | Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14 |
Unaffected:
codec-http , < *
(rpm)
Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:apache_camel_spring_boot:4.18 |
|
| Red Hat | Red Hat build of Quarkus 3.20.6 |
Unaffected:
codec-http2 , < *
(rpm)
cpe:/a:redhat:quarkus:3.20::el8 |
|
| Red Hat | Red Hat build of Quarkus 3.27.3 |
Unaffected:
codec-http2 , < *
(rpm)
cpe:/a:redhat:quarkus:3.27::el8 |
|
| Red Hat | Red Hat Data Grid 8.6.1 |
Unaffected:
codec-http , < *
(rpm)
Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 |
Unaffected:
http-4.1.100.Final.jar , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 |
Unaffected:
0:4.1.132-1.Final_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 |
Unaffected:
0:4.1.132-1.Final_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9 |
|
| Red Hat | Streams for Apache Kafka 2.9.4 |
Unaffected:
codec-http , < *
(rpm)
Unaffected: codec-http2 , < * (rpm) cpe:/a:redhat:amq_streams:2.9::el9 |
|
| Red Hat | Streams for Apache Kafka 3.2.0 |
cpe:/a:redhat:amq_streams:3.2::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776756834 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776716842 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776717247 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776796445 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Cryostat 4 |
cpe:/a:redhat:cryostat:4 |
|
| Red Hat | Logging Subsystem for Red Hat OpenShift |
cpe:/a:redhat:logging:5 |
|
| Red Hat | OpenShift Serverless |
cpe:/a:redhat:serverless:1 |
|
| Red Hat | Red Hat AMQ Clients |
cpe:/a:redhat:amq_clients:2023 |
|
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 |
cpe:/a:redhat:camel_quarkus:3 |
|
| Red Hat | Red Hat build of Apache Camel - HawtIO 4 |
cpe:/a:redhat:apache_camel_hawtio:4 |
|
| Red Hat | Red Hat build of Apicurio Registry 2 |
cpe:/a:redhat:service_registry:2 |
|
| Red Hat | Red Hat build of Apicurio Registry 3 |
cpe:/a:redhat:apicurio_registry:3 |
|
| Red Hat | Red Hat build of Debezium 2 |
cpe:/a:redhat:debezium:2 |
|
| Red Hat | Red Hat build of Debezium 3 |
cpe:/a:redhat:debezium:3 |
|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|
| Red Hat | Red Hat build of OptaPlanner 8 |
cpe:/a:redhat:optaplanner:::el6 |
|
| Red Hat | Red Hat build of Quarkus |
cpe:/a:redhat:quarkus:3 |
|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat Process Automation 7 |
cpe:/a:redhat:jboss_enterprise_bpms_platform:7 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7 |
|
| Red Hat | streams for Apache Kafka 3 |
cpe:/a:redhat:amq_streams:3 |
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CVE-2026-34479 (GCVE-0-2026-34479)
Vulnerability from cvelistv5 – Published: 2026-04-10 15:41 – Updated: 2026-04-10 17:47- CWE-116 - Improper Encoding or Escaping of Output
| URL | Tags |
|---|---|
| https://github.com/apache/logging-log4j2/pull/4078 | patch |
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| https://logging.apache.org/cyclonedx/vdr.xml | vendor-advisory |
| https://logging.apache.org/log4j/2.x/migrate-from… | related |
| https://lists.apache.org/thread/gd0hp6mj17rn3kj27… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/04/10/8 |
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Log4j 1 to Log4j 2 bridge |
Affected:
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Affected: 3.0.0-alpha1 , ≤ 3.0.0-beta2 (maven) cpe:2.3:a:apache:log4j_1_2_api:*:*:*:*:*:*:*:* |
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GHSA-H383-GMXW-35V2
Vulnerability from github – Published: 2026-04-10 18:31 – Updated: 2026-04-14 00:10The Log4j1XmlLayout from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, producing malformed XML output. Conforming XML parsers are required to reject documents containing such characters with a fatal error, which may cause downstream log processing systems to drop or fail to index affected records.
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Log4j1XmlLayoutdirectly in a Log4j Core 2 configuration file. - Those using the Log4j 1 configuration compatibility layer with
org.apache.log4j.xml.XMLLayoutspecified as the layout class.
Users are advised to upgrade to Apache Log4j 1-to-Log4j 2 bridge version 2.25.4, which corrects this issue.
[!NOTE] The Apache Log4j 1-to-Log4j 2 bridge is deprecated and will not be present in Log4j 3. Users are encouraged to consult the Log4j 1 to Log4j 2 migration guide, and specifically the section on eliminating reliance on the bridge.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.logging.log4j:log4j-1.2-api"
},
"ranges": [
{
"events": [
{
"introduced": "2.7"
},
{
"fixed": "2.25.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.logging.log4j:log4j-1.2-api"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.0-beta1"
},
{
"last_affected": "3.0.0-beta2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-34479"
],
"database_specific": {
"cwe_ids": [
"CWE-116"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-14T00:10:59Z",
"nvd_published_at": "2026-04-10T16:16:31Z",
"severity": "MODERATE"
},
"details": "The `Log4j1XmlLayout` from the Apache Log4j 1-to-Log4j 2 bridge fails to escape characters forbidden by the XML 1.0 standard, producing malformed XML output. Conforming XML parsers are required to reject documents containing such characters with a fatal error, which may cause downstream log processing systems to drop or fail to index affected records.\n\nTwo groups of users are affected:\n\n* Those using `Log4j1XmlLayout` directly in a Log4j Core 2 configuration file.\n* Those using the Log4j 1 configuration compatibility layer with `org.apache.log4j.xml.XMLLayout` specified as the layout class.\n\nUsers are advised to upgrade to Apache Log4j 1-to-Log4j 2 bridge version `2.25.4`, which corrects this issue.\n\n\u003e [!NOTE]\n\u003e The Apache Log4j 1-to-Log4j 2 bridge is deprecated and will not be present in Log4j 3. Users are encouraged to consult the\n\u003e [Log4j 1 to Log4j 2 migration guide](https://logging.apache.org/log4j/2.x/migrate-from-log4j1.html), and specifically the section on eliminating reliance on the bridge.",
"id": "GHSA-h383-gmxw-35v2",
"modified": "2026-04-14T00:10:59Z",
"published": "2026-04-10T18:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34479"
},
{
"type": "WEB",
"url": "https://github.com/apache/logging-log4j2/pull/4078"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/logging-log4j2"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/gd0hp6mj17rn3kj279vgy4p7kd4zz5on"
},
{
"type": "WEB",
"url": "https://logging.apache.org/cyclonedx/vdr.xml"
},
{
"type": "WEB",
"url": "https://logging.apache.org/log4j/2.x/migrate-from-log4j1.html"
},
{
"type": "WEB",
"url": "https://logging.apache.org/security.html#CVE-2026-34479"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/04/10/8"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Apache Log4j 1 to Log4j 2 bridge: silent log event loss in Log4j1XmlLayout due to unescaped XML 1.0 forbidden characters"
}
GHSA-J288-Q9X7-2F5V
Vulnerability from github – Published: 2025-07-11 15:31 – Updated: 2025-11-05 20:30Uncontrolled Recursion vulnerability in Apache Commons Lang.
This issue affects Apache Commons Lang: Starting with commons-lang:commons-lang 2.0 to 2.6, and, from org.apache.commons:commons-lang3 3.0 before 3.18.0.
The methods ClassUtils.getClass(...) can throw StackOverflowError on very long inputs. Because an Error is usually not handled by applications and libraries, a StackOverflowError could cause an application to stop.
Users are recommended to upgrade to version 3.18.0, which fixes the issue.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.commons:commons-lang3"
},
"ranges": [
{
"events": [
{
"introduced": "3.0"
},
{
"fixed": "3.18.0"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "commons-lang:commons-lang"
},
"ranges": [
{
"events": [
{
"introduced": "2.0"
},
{
"last_affected": "2.6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-48924"
],
"database_specific": {
"cwe_ids": [
"CWE-674"
],
"github_reviewed": true,
"github_reviewed_at": "2025-07-12T00:48:03Z",
"nvd_published_at": "2025-07-11T15:15:24Z",
"severity": "MODERATE"
},
"details": "Uncontrolled Recursion vulnerability in Apache Commons Lang.\n\nThis issue affects Apache Commons Lang: Starting with\u00a0commons-lang:commons-lang\u00a02.0 to 2.6, and, from org.apache.commons:commons-lang3 3.0 before\u00a03.18.0.\n\nThe methods ClassUtils.getClass(...) can throw\u00a0StackOverflowError on very long inputs. Because an Error is usually not handled by applications and libraries, a StackOverflowError could\u00a0cause an application to stop.\n\nUsers are recommended to upgrade to version 3.18.0, which fixes the issue.",
"id": "GHSA-j288-q9x7-2f5v",
"modified": "2025-11-05T20:30:31Z",
"published": "2025-07-11T15:31:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48924"
},
{
"type": "WEB",
"url": "https://github.com/apache/commons-lang/commit/b424803abdb2bec818e4fbcb251ce031c22aca53"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/commons-lang"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/bgv0lpswokgol11tloxnjfzdl7yrc1g1"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00000.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00026.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00032.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00036.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/07/11/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "Apache Commons Lang is vulnerable to Uncontrolled Recursion when processing long inputs"
}
GHSA-W9FJ-CFPG-GRVV
Vulnerability from github – Published: 2026-03-26 18:49 – Updated: 2026-03-27 21:48Summary
A remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of CONTINUATION frames. The server's lack of a limit on the number of CONTINUATION frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive.
Details
The vulnerability exists in Netty's DefaultHttp2FrameReader. When an HTTP/2 HEADERS frame is received without the END_HEADERS flag, the server expects one or more subsequent CONTINUATION frames. However, the implementation does not enforce a limit on the count of these CONTINUATION frames.
The key issue is located in codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2FrameReader.java. The verifyContinuationFrame() method checks for stream association but fails to implement a frame count limit.
Any user can exploit this by sending a stream of CONTINUATION frames with a zero-byte payload. While Netty has a maxHeaderListSize protection to limit the total size of headers, this check is never triggered by zero-byte frames. The logic effectively evaluates to maxHeaderListSize - 0 < currentSize, which will not trigger the limit until a non-zero byte is added. As a result, the server is forced to process an unlimited number of frames, consuming a CPU thread and monopolizing the connection.
codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2FrameReader.java
verifyContinuationFrame() (lines 381-393) — No frame count check:
private void verifyContinuationFrame() throws Http2Exception {
verifyAssociatedWithAStream();
if (headersContinuation == null) {
throw connectionError(PROTOCOL_ERROR, "...");
}
if (streamId != headersContinuation.getStreamId()) {
throw connectionError(PROTOCOL_ERROR, "...");
}
// NO frame count limit!
}
HeadersBlockBuilder.addFragment() (lines 695-723) — Byte limit bypassed by 0-byte frames:
// Line 710-711: This check NEVER fires when len=0
if (headersDecoder.configuration().maxHeaderListSizeGoAway() - len <
headerBlock.readableBytes()) {
headerSizeExceeded(); // 10240 - 0 < 1 => FALSE always
}
When len=0: maxGoAway - 0 < readableBytes → 10240 < 1 → FALSE. The byte limit is never triggered.
Impact
This is a CPU-based Denial of Service (DoS). Any service using Netty's default HTTP/2 server implementation is impacted. An unauthenticated user can exhaust server CPU resources and block legitimate users, leading to service unavailability. The low bandwidth requirement for the attack makes it highly practical.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "io.netty:netty-codec-http2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.132.Final"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c 4.2.10.Final"
},
"package": {
"ecosystem": "Maven",
"name": "io.netty:netty-codec-http2"
},
"ranges": [
{
"events": [
{
"introduced": "4.2.0.Alpha1"
},
{
"fixed": "4.2.11.Final"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-33871"
],
"database_specific": {
"cwe_ids": [
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-26T18:49:21Z",
"nvd_published_at": "2026-03-27T20:16:34Z",
"severity": "HIGH"
},
"details": "### Summary\nA remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUATION` frames. The server\u0027s lack of a limit on the number of `CONTINUATION` frames, combined with a bypass of existing size-based mitigations using zero-byte frames, allows an user to cause excessive CPU consumption with minimal bandwidth, rendering the server unresponsive.\n\n### Details\nThe vulnerability exists in Netty\u0027s `DefaultHttp2FrameReader`. When an HTTP/2 `HEADERS` frame is received without the `END_HEADERS` flag, the server expects one or more subsequent `CONTINUATION` frames. However, the implementation does not enforce a limit on the *count* of these `CONTINUATION` frames.\n\nThe key issue is located in `codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2FrameReader.java`. The `verifyContinuationFrame()` method checks for stream association but fails to implement a frame count limit.\n\nAny user can exploit this by sending a stream of `CONTINUATION` frames with a zero-byte payload. While Netty has a `maxHeaderListSize` protection to limit the total size of headers, this check is never triggered by zero-byte frames. The logic effectively evaluates to `maxHeaderListSize - 0 \u003c currentSize`, which will not trigger the limit until a non-zero byte is added. As a result, the server is forced to process an unlimited number of frames, consuming a CPU thread and monopolizing the connection.\n\n`codec-http2/src/main/java/io/netty/handler/codec/http2/DefaultHttp2FrameReader.java`\n\n**`verifyContinuationFrame()` (lines 381-393)** \u2014 No frame count check:\n```java\nprivate void verifyContinuationFrame() throws Http2Exception {\n verifyAssociatedWithAStream();\n if (headersContinuation == null) {\n throw connectionError(PROTOCOL_ERROR, \"...\");\n }\n if (streamId != headersContinuation.getStreamId()) {\n throw connectionError(PROTOCOL_ERROR, \"...\");\n }\n // NO frame count limit!\n}\n```\n\n**`HeadersBlockBuilder.addFragment()` (lines 695-723)** \u2014 Byte limit bypassed by 0-byte frames:\n```java\n// Line 710-711: This check NEVER fires when len=0\nif (headersDecoder.configuration().maxHeaderListSizeGoAway() - len \u003c\n headerBlock.readableBytes()) {\n headerSizeExceeded(); // 10240 - 0 \u003c 1 =\u003e FALSE always\n}\n```\n\nWhen `len=0`: `maxGoAway - 0 \u003c readableBytes` \u2192 `10240 \u003c 1` \u2192 FALSE. The byte limit is never triggered.\n\n### Impact\nThis is a CPU-based Denial of Service (DoS). Any service using Netty\u0027s default HTTP/2 server implementation is impacted. An unauthenticated user can exhaust server CPU resources and block legitimate users, leading to service unavailability. The low bandwidth requirement for the attack makes it highly practical.",
"id": "GHSA-w9fj-cfpg-grvv",
"modified": "2026-03-27T21:48:53Z",
"published": "2026-03-26T18:49:21Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/netty/netty/security/advisories/GHSA-w9fj-cfpg-grvv"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33871"
},
{
"type": "PACKAGE",
"url": "https://github.com/netty/netty"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Netty HTTP/2 CONTINUATION Frame Flood DoS via Zero-Byte Frame Bypass"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.