This advisory has been withdrawn because it is a duplicate of GHSA-v396-v7q4-x2qj. This link is maintained to preserve external references.

GitPython 3.1.50 fails to recognize joined short-option forms such as -u (the short form of --upload-pack=) 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 to bypass the gate that blocks --upload-pack/-u, causing Git to execute the specified helper command during clone. Fixed in 3.1.51.