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  4. CVE 2026 100408 git for windows git credential wincred erase path
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Back to active CVEs
Medium · CVSS 4.4CVE-2026-100408

Git for Windows: git-credential-wincred Erase Path Heap OverflowCVE-2026-100408

Answer in brief

CVE-2026-100408 records a Medium severity (CVSS 4.4) vulnerability in Git for Windows: git-credential-wincred Erase Path Heap Overflow. The current sources do not mark it as known exploited. The current feed maps git-for-windows/git (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 4, 2026Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Nov 4, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 4.4
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 4.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps git-for-windows/git (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
git-for-windows/gitgeneric>=2.43.0.windows.1 <2.55.0.windows.32.55.0.windows.3

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for git-for-windows/git.
  2. 2Review the reported fix. Update git-for-windows/git to 2.55.0.windows.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 4, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Git for Windows: git-credential-wincred OAuth Store Heap OverflowSame git-for-windows/git package
  • FreeRDP before 3.32.2 Proxy Out-of-Bounds Write via Bitmap Cache v2 CapabilityAlso CWE-787
  • FreeRDP before 3.32.2 Heap Out-of-Bounds Write in Planar CodecAlso CWE-787
  • FreeRDP before 3.32.2 Heap Buffer Overflow via Early User Authorization ReadAlso CWE-787

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787
Source
CVE List V5
Source checked
Nov 4, 2026
References
3 linked sources
Open source record