SB2026092906 - Out-of-bounds write in Git for Windows

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Main Vulnerability Database SB2026092906

SB2026092906 - Out-of-bounds write in Git for Windows

Published: September 29, 2026 Updated: September 30, 2026

Security Bulletin ID SB2026092906
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds write (CVE-ID: CVE-2026-100407)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service or prevent OAuth credentials from being persisted.

The vulnerability exists due to an out-of-bounds write in the git-credential-wincred store OAuth credential formatting path when storing credentials containing a password and oauth_refresh_token. A remote attacker can cause a victim to process crafted credential input to cause a denial of service or prevent OAuth credentials from being persisted.

User interaction is required.


Remediation

Install update from vendor's website.

References