Input validation error in GitPython - CVE-2026-44244
Published: May 11, 2026
Vulnerability identifier: #VU131002
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-44244
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: gitpython-developers
Affected software:
GitPython
GitPython
Detailed vulnerability description
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to improper input validation in GitConfigParser.set_value() when writing user-supplied configuration values to .git/config. A local user can inject newline characters to create a malicious core.hooksPath setting and execute arbitrary code.
Any Git operation that invokes hooks, such as commit, merge, or checkout, may trigger execution from the attacker-controlled path. In shared repositories, the injected configuration can persist and affect subsequent Git operations by other users.
How to mitigate CVE-2026-44244
Install security update from vendor's website.