Interpretation Conflict in isomorphic-git - #VU165356
Published: November 11, 2026
Vulnerability identifier: #VU165356
CSH Severity: Low
CVSS v4: 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]
CVE-ID: N/A
CWE-ID: CWE-436
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
isomorphic-git
Remediation
Install security update from vendor's website.
isomorphic-git - update to 1.44.10