SB20260507100 - Security restrictions bypass in go-git

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Main Vulnerability Database SB20260507100

SB20260507100 - Security restrictions bypass in go-git

Published: May 7, 2026

Security Bulletin ID SB20260507100
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Incorrect Behavior Order: Validate Before Canonicalize (CVE-ID: CVE-2026-45022)

CWE-ID: CWE-180 - Incorrect Behavior Order: Validate Before Canonicalize

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to cause inconsistent interpretation of Git object metadata and accept a signature over data that is not byte-for-byte equivalent to the stored object.

The vulnerability exists due to validate-before-canonicalize behavior in commit and tag object parsing and signature verification logic when processing specially crafted malformed Git objects with ambiguous headers. A remote user can supply a specially crafted commit or tag object to cause inconsistent interpretation of Git object metadata and accept a signature over data that is not byte-for-byte equivalent to the stored object.


Remediation

Install update from vendor's website.

References