PYSEC-2026-3839 GitPython: command injection via unguarded Git options in `Repo.archive()`, `git.ls_remote()`, and arbitrary file overwrite via `Repo.iter_commits()` / `Repo.blame()`

Summary GitPython already know that --upload-pack / --exec are command-exec vectors, they are denylist in git/remote.py:535 and check by Git.checkunsafeoptions git/cmd.py:963, the thing is this check him he is only call from fetch, pull, push and clonefrom, everything else who build a git argv fr...

CVE-2026-73625: Improper Neutralization of Special Elements used in an OS Command

GitPython versions before 3.1.54 contain a remote code execution vulnerability in the checkunsafeoptions guard that can be bypassed by smuggling git options inside single-character kwarg values. Attackers can supply crafted option dictionaries to clonefrom, fetch, pull, push, lsremote, itercommit...

GHSA-R9MR-M37C-5FR3 GitPython: Unsafe git option guard bypass via single-character kwarg value token smuggling enables arbitrary command execution

Summary GitPython's checkunsafeoptions guard the control introduced by CVE-2026-42215 / GHSA-2f96 and hardened since can be bypassed for every guarded method clone/clonefrom, fetch/pull/push, lsremote, itercommits, blame, archive by smuggling an option token inside the VALUE of a single-character...