SB20261111107 - Interpretation Conflict in isomorphic-git

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Main Vulnerability Database SB20261111107

SB20261111107 - Interpretation Conflict in isomorphic-git

Published: November 11, 2026

Security Bulletin ID SB20261111107
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) Interpretation Conflict (CVE-ID: N/A)

CWE-ID: CWE-436 - Interpretation Conflict

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to manipulate checked-out content and apparent commit ancestry, potentially misleading merge and policy decisions.

The vulnerability exists due to inconsistent interpretation of positional commit headers in isomorphic-git’s GitCommit.parseHeaders() when processing tree or parent headers after the committer header. A remote user can push crafted commits containing these extra headers to a repository consumed by an application to substitute the interpreted tree or introduce ancestry that Git does not recognize.


Remediation

Install update from vendor's website.

References