CVE-2026-46598 (GCVE-0-2026-46598)
Vulnerability from cvelistv5 – Published: 2026-05-22 02:31 – Updated: 2026-05-22 18:14
VLAI
EPSS
VEX
Title
Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent
Summary
For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-22 18:12 UTC
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh/agent |
Affected:
0 , < 0.52.0
(semver)
|
guessed |
{
"containers": {
"adp": [
{
"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"
}
},
{
"other": {
"content": {
"id": "CVE-2026-46598",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-22T18:12:30.585638Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-129",
"description": "CWE-129 Improper Validation of Array Index",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-22T18:14:37.255Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/crypto/ssh/agent",
"product": "golang.org/x/crypto/ssh/agent",
"programRoutines": [
{
"name": "parseEd25519Cert"
},
{
"name": "parseEd25519Key"
},
{
"name": "ForwardToAgent"
},
{
"name": "ServeAgent"
}
],
"vendor": "golang.org/x/crypto",
"versions": [
{
"lessThan": "0.52.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "NCC Group Cryptography Services, sponsored by Teleport"
}
],
"descriptions": [
{
"lang": "en",
"value": "For certain crafted inputs, a \u0027ed25519.PrivateKey\u0027 was created by casting malformed wire bytes, leading to a panic when used."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-129: Improper Validation of Array Index",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-22T02:31:27.986Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/issue/79596"
},
{
"url": "https://go.dev/cl/781360"
},
{
"url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5033"
}
],
"title": "Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-46598",
"datePublished": "2026-05-22T02:31:27.986Z",
"dateReserved": "2026-05-15T17:35:00.813Z",
"dateUpdated": "2026-05-22T18:14:37.255Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-46598",
"date": "2026-08-19",
"epss": "0.00412",
"percentile": "0.34554"
},
"microsoft_vex": {
"current_release_date": "2026-06-28T01:41:12.000Z",
"cve": "CVE-2026-46598",
"id": "msrc_CVE-2026-46598",
"initial_release_date": "2026-05-02T00:00:00.000Z",
"product_status:fixed": "5",
"product_status:known_affected": "8",
"product_status:known_not_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46598.json",
"version": "9"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-46598\",\"sourceIdentifier\":\"security@golang.org\",\"published\":\"2026-05-22T04:16:26.537\",\"lastModified\":\"2026-07-23T16:10:00.137\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"For certain crafted inputs, a \u0027ed25519.PrivateKey\u0027 was created by casting malformed wire bytes, leading to a panic when used.\"},{\"lang\":\"es\",\"value\":\"Para ciertas entradas manipuladas, se cre\u00f3 una \u0027ed25519.PrivateKey\u0027 mediante la conversi\u00f3n de bytes de red malformados, lo que provocaba un p\u00e1nico al ser utilizada.\"}],\"affected\":[{\"source\":\"security@golang.org\",\"affectedData\":[{\"vendor\":\"golang.org/x/crypto\",\"product\":\"golang.org/x/crypto/ssh/agent\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://pkg.go.dev\",\"packageName\":\"golang.org/x/crypto/ssh/agent\",\"programRoutines\":[{\"name\":\"parseEd25519Cert\"},{\"name\":\"parseEd25519Key\"},{\"name\":\"ForwardToAgent\"},{\"name\":\"ServeAgent\"}],\"versions\":[{\"version\":\"0\",\"lessThan\":\"0.52.0\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-05-22T18:12:30.585638Z\",\"id\":\"CVE-2026-46598\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-129\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:*\",\"versionEndExcluding\":\"0.52.0\",\"matchCriteriaId\":\"D540395B-31B8-4B07-8F79-F5C631BBD5C8\"}]}]}],\"references\":[{\"url\":\"https://go.dev/cl/781360\",\"source\":\"security@golang.org\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://go.dev/issue/79596\",\"source\":\"security@golang.org\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://groups.google.com/g/golang-announce/c/a082jnz-LvI\",\"source\":\"security@golang.org\",\"tags\":[\"Mailing List\"]},{\"url\":\"https://pkg.go.dev/vuln/GO-2026-5033\",\"source\":\"security@golang.org\",\"tags\":[\"Vendor Advisory\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-20T02:36:55+00:00",
"cve": "CVE-2026-46598",
"id": "CVE-2026-46598",
"initial_release_date": "2026-05-22T02:31:27.986000+00:00",
"product_status:fixed": "116",
"product_status:known_affected": "165",
"product_status:known_not_affected": "206",
"product_status:under_investigation": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "golang.org/x/crypto/ssh/agent: golang: golang.org/x/crypto/ssh/agent: Denial of Service via malformed input",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46598.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-08-05T00:37:09Z",
"cve": "CVE-2026-46598",
"id": "CVE-2026-46598",
"initial_release_date": "2026-05-23T01:27:52Z",
"product_status:known_affected": "743",
"product_status:known_not_affected": "267",
"product_status:recommended": "437",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-46598",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46598.json",
"version": "36"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-46598\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-22T18:12:30.585638Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-129\", \"description\": \"CWE-129 Improper Validation of Array Index\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-22T18:12:24.727Z\"}}], \"cna\": {\"title\": \"Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent\", \"credits\": [{\"lang\": \"en\", \"value\": \"NCC Group Cryptography Services, sponsored by Teleport\"}], \"affected\": [{\"vendor\": \"golang.org/x/crypto\", \"product\": \"golang.org/x/crypto/ssh/agent\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"0.52.0\", \"versionType\": \"semver\"}], \"packageName\": \"golang.org/x/crypto/ssh/agent\", \"collectionURL\": \"https://pkg.go.dev\", \"defaultStatus\": \"unaffected\", \"programRoutines\": [{\"name\": \"parseEd25519Cert\"}, {\"name\": \"parseEd25519Key\"}, {\"name\": \"ForwardToAgent\"}, {\"name\": \"ServeAgent\"}]}], \"references\": [{\"url\": \"https://go.dev/issue/79596\"}, {\"url\": \"https://go.dev/cl/781360\"}, {\"url\": \"https://groups.google.com/g/golang-announce/c/a082jnz-LvI\"}, {\"url\": \"https://pkg.go.dev/vuln/GO-2026-5033\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"For certain crafted inputs, a \u0027ed25519.PrivateKey\u0027 was created by casting malformed wire bytes, leading to a panic when used.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"CWE-129: Improper Validation of Array Index\"}]}], \"providerMetadata\": {\"orgId\": \"1bb62c36-49e3-4200-9d77-64a1400537cc\", \"shortName\": \"Go\", \"dateUpdated\": \"2026-05-22T02:31:27.986Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-46598\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-22T18:14:37.255Z\", \"dateReserved\": \"2026-05-15T17:35:00.813Z\", \"assignerOrgId\": \"1bb62c36-49e3-4200-9d77-64a1400537cc\", \"datePublished\": \"2026-05-22T02:31:27.986Z\", \"assignerShortName\": \"Go\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Loading…
Loading…