CVE-2026-67324
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.
- Score
- CVSS 3.1 9.8 Critical
- Status
- Analyzed - disclosure@vulncheck.com
- Published
- 2026-08-01
- Last modified
- 2026-10-23
- Weaknesses
- CWE-78
Affected products
References
- https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-v396-v7q4-x2qj
- https://www.vulncheck.com/advisories/gitpython-authentication-bypass-via-joined-short-options
