CVE-2026-100407— Git for Windows: git-credential-wincred OAuth Store Heap Overflow
Quick assessment
Affected
git-for-windows git
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Git for Windows 是 Git 在 Windows 平台上的移植版本。在从 2.44.0.windows.1 到 2.55.0.windows.3 的版本范围内，位于 contrib/credential/wincred/git-credential-wincred.c 中的 git-credential-wincred 凭据存储操作存在漏洞：当同时存在密码（password）和 OAuth 刷新令牌（oauth_refresh_token）时，该操作使用 _scwprintf() 来计算格式化宽字符凭
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-100407
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Git for Windows: git-credential-wincred OAuth Store Heap Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
Git for Windows is the Windows port of Git. From 2.44.0.windows.1 until 2.55.0.windows.3, the git-credential-wincred store operation in contrib/credential/wincred/git-credential-wincred.c uses _scwprintf() to size a formatted wide-character credential buffer without space for the terminating NUL when both password and oauth_refresh_token are present. The operation also passes a byte count to _snwprintf_s() where a wide-character count is required, allowing the terminator to be written one WCHAR past the heap allocation before CredWriteW() persists the credential. The resulting fixed two-byte NUL overwrite can terminate the helper with Windows heap-corruption status and can cause git credential approve to report success even though the OAuth credential was not stored. This issue is fixed in version 2.55.0.windows.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| git-for-windows | git | >= 2.44.0.windows.1, < 2.55.0.windows.3 | - |
|
II. Public POCs for CVE-2026-100407
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-100407
请登录查看更多情报信息。
Other References for CVE-2026-100407 (3)
-
https://github.com/git-for-windows/git/security/advisories/GHSA-v3h4-vrpr-rh9x x_refsource_CONFIRM
IV. Related Vulnerabilities
Same product: git
-
CVE-2026-100408
Git for Windows: git-credential-wincred Erase Path Heap Over -
CVE-2026-62960
Git for Windows: Server-advertised bundle-uri can trigger ou -
CVE-2026-32631
Git for Windows: `git clone` from manipulated repositories c -
CVE-2025-66413
Git for Windows leaks NTLM hash when cloning from an attacke -
CVE-2025-48384
Git allows arbitrary code execution through broken config qu
Same vendor: git-for-windows
-
CVE-2026-100408
Git for Windows: git-credential-wincred Erase Path Heap Over -
CVE-2026-62960
Git for Windows: Server-advertised bundle-uri can trigger ou -
CVE-2026-32631
Git for Windows: `git clone` from manipulated repositories c -
CVE-2025-66413
Git for Windows leaks NTLM hash when cloning from an attacke -
CVE-2023-29012
Git CMD erroneously executes `doskey.exe` in the current dir
Same weakness: CWE-787
-
CVE-2026-113780
ESF-IDF: Unvalidated Stack Pointer at the ESP-TEE Privilege- -
CVE-2026-121962
FreeRDP before 3.32.2 Heap Buffer Overflow via Early User Au -
CVE-2026-121954
FreeRDP before 3.32.2 Heap Out-of-Bounds Write in Planar Cod -
CVE-2026-121952
FreeRDP before 3.32.2 Proxy Out-of-Bounds Write via Bitmap C -
CVE-2026-100408
Git for Windows: git-credential-wincred Erase Path Heap Over