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PYSEC-2026-3947

Quick fix

PYSEC-2026-3947 — gitpython: upgrade to the fixed version with the command below.

pip install --upgrade 'gitpython>=3.1.50'

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/gitpython
Introduced in: 0Fixed in: 3.1.50
Fixpip install --upgrade 'gitpython>=3.1.50'

References