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vuln-cve/data/2026/100xxx/CVE-2026-100408.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-100408",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-09-25T20:08:33.084Z",
"datePublished": "2026-11-04T15:12:10.794Z",
"dateUpdated": "2026-11-09T16:21:10.425Z"
},
"containers": {
"cna": {
"title": "Git for Windows: git-credential-wincred Erase Path Heap Overflow",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-787",
"lang": "en",
"description": "CWE-787: Out-of-bounds Write",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 4.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/git-for-windows/git/security/advisories/GHSA-5j7x-r6vf-jhq2",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/git-for-windows/git/security/advisories/GHSA-5j7x-r6vf-jhq2"
},
{
"name": "https://github.com/git-for-windows/git/commit/b4d1fb62c7e2fdcab5a018e25e51acb196eb1756",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/git-for-windows/git/commit/b4d1fb62c7e2fdcab5a018e25e51acb196eb1756"
},
{
"name": "https://github.com/git-for-windows/git/releases/tag/v2.55.0.windows.3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/git-for-windows/git/releases/tag/v2.55.0.windows.3"
}
],
"affected": [
{
"vendor": "git-for-windows",
"product": "git",
"versions": [
{
"version": ">= 2.43.0.windows.1, < 2.55.0.windows.3",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-11-04T15:12:10.794Z"
},
"descriptions": [
{
"lang": "en",
"value": "Git for Windows is the Windows port of Git. From 2.43.0.windows.1 until 2.55.0.windows.3, when a matching git:* credential exists in Windows Credential Manager and a git-credential-wincred erase input includes a password field, the operation in contrib/credential/wincred/git-credential-wincred.c allocates a buffer of exactly CredentialBlobSize bytes in match_cred_password() and then uses wcsncpy_s() to copy the corresponding number of wide characters plus a terminating NUL. The destination capacity is also supplied in bytes instead of WCHAR elements, allowing a fixed two-byte NUL write past the allocation before the password comparison determines whether CredDeleteW() should remove the credential; erase without a password field does not enter this comparison path. The helper can terminate with Windows heap-corruption status, and git credential reject can appear successful while the rejected credential remains stored. This issue is fixed in version 2.55.0.windows.3."
}
],
"source": {
"advisory": "GHSA-5j7x-r6vf-jhq2",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/git-for-windows/git/security/advisories/GHSA-5j7x-r6vf-jhq2",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-11-09T16:20:25.703182Z",
"id": "CVE-2026-100408",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-09T16:21:10.425Z"
}
}
]
}
}