CVE-2026-110855

Name	CVE-2026-110855
Description	GitPython before 3.2.0 contains an information disclosure vulnerability that allows malicious repositories to expand environment variables via separate_git_dir in Repo._clone(), which omits expand_vars=False when calling Git.polish_url(). Attackers can craft a .gitmodules submodule name containing variable syntax so that clone plus submodule_update exposes secrets in .git/modules directory names and DEBUG logs.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4872-1, DSA-6594-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-git (PTS)	bookworm	3.1.30-1+deb12u2	vulnerable
	bookworm (security)	3.1.30-1+deb12u3	fixed
	trixie	3.1.44-1	vulnerable
	trixie (security)	3.1.44-1+deb13u1	fixed
	forky, sid	3.2.1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
python-git	source	bookworm	3.1.30-1+deb12u3	DLA-4872-1
python-git	source	trixie	3.1.44-1+deb13u1	DSA-6594-1
python-git	source	(unstable)	3.2.1-1

Notes

https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-fx3j-rwgx-fr94
Fixed by: https://github.com/gitpython-developers/GitPython/commit/9349ff58ee00c9fb14d515c8e693f33b2144b238 (3.2.0)