CVE-2026-78676

Critical

Description

GitPython before 3.1.59 fails to safely re-serialize multi-line git-config values during write operations, corrupting dormant quoted values into injected directives like core.hooksPath. Attackers can craft config files with embedded newlines that become live git directives after any unrelated GitPython config write, enabling arbitrary code execution via hook invocation.

SeverityCritical

CVSS9.8

Exploit probability—

ProductGitpython

PublishedAug 25, 2026

First seenAug 25, 2026

Weakness typeCWE-88CWE-88

How to fix

Update

gitpython_project gitpython3.1.59 or later
gitpython3.1.59 or later

Vendor advisories

github.com/gitpython-developers/GitPython/security/advisories/GHSA-284h-m62q-gf8w

Affected products

Product	Affected versions	Fixed in
gitpython_project gitpython	v < 3.1.59	3.1.59
gitpythonPyPI	v < 3.1.59	3.1.59

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