CVE-2026-73623: Gitpython Project Gitpython

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

GitPython before 3.1.54 contains an incomplete denylist in unsafe_git_clone_options that omits --template, allowing attackers to achieve arbitrary command execution during clone operations. Attackers can supply --template pointing to a directory containing malicious post-checkout hooks that execute when git clones the repository.

Affected products

• Gitpython Project Gitpython: before 3.1.54 (fixed in 3.1.54)

Published 2026-08-13. Last modified 2026-09-03.