CVE-2026-73623

High

Description

GitPython before 3.1.54 contains an incomplete denylist in unsafe_git_clone_options that omits --template, allowing attackers to achieve arbitrary command execution during clone operations. Attackers can supply --template pointing to a directory containing malicious post-checkout hooks that execute when git clones the repository.

SeverityHigh

CVSS7.5

Exploit probability—

ProductGitpython

PublishedAug 13, 2026

First seenAug 13, 2026

Weakness typeCWE-78OS command injection

How to fix

Update

gitpython_project gitpython3.1.54 or later
gitpython3.1.54 or later

Vendor advisories

github.com/gitpython-developers/GitPython/security/advisories/GHSA-6p8h-3wgx-97gf

Affected products

Product	Affected versions	Fixed in
gitpython_project gitpython	v < 3.1.54	3.1.54
gitpythonPyPI	v < 3.1.54	3.1.54

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