Vulnerability · Published Aug 25, 2026 · Assigned by VulnCheck

CVE-2026-78678GitPython before 3.1.59 Arbitrary File Read via Repo.blame()

Medium 6.5

In plain English

A medium-severity argument injection in GitPython from gitpython-developers. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 64.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

GitPython versions before 3.1.59 contain an incomplete denylist in the unsafe_git_revision_options guard that omits --contents and -S options, allowing attackers to read arbitrary files by passing these options to Repo.blame(). Attackers can supply revision values like --contents=/etc/passwd to leak file contents through the blame result returned to the caller.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.24	py3-gitpython	3.1.61-r0	ALPINE-CVE-2026-78678
Debian:12	python-git	3.1.30-1+deb12u3	DEBIAN-CVE-2026-78678
Debian:13	python-git	3.1.44-1+deb13u1	DEBIAN-CVE-2026-78678
Debian:14	python-git	3.1.61-1	DEBIAN-CVE-2026-78678
PyPI	gitpython	3.1.59	GHSA-5xxx-qhh7-9287
PyPI	gitpython	3.1.59	PYSEC-2026-3788

Affected products (as reported)

Vendor	Product	Versions
gitpython-developers	GitPython	0 – before 3.1.59

Weakness: CWE-88 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-5xxx-qhh7-9287) vendor-advisory
VulnCheck Advisory: GitPython before 3.1.59 Arbitrary File Read via Repo.blame() third-party-advisory