CVE-2026-67324: Gitpython Project Gitpython

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

GitPython 3.1.50 fails to recognize joined short-option forms such as -u<value> (the short form of --upload-pack=<value>) when enforcing its default unsafe-option gate. When an application passes attacker-influenced clone options into Repo.clone_from(..., multi_options=..., allow_unsafe_options=False), an attacker can supply -u<helper> to bypass the gate that blocks --upload-pack/-u, causing Git to execute the specified helper command during clone. Fixed in 3.1.51.

Affected products

• Gitpython Project Gitpython: before 3.1.50 (fixed in 3.1.50)

Published 2026-08-01. Last modified 2026-09-03.