CVE catalog

CVE-2026-73621

GitPython before 3.1.56 contains an argument injection vulnerability in the Commit.count() method, which forwards keyword arguments to 'git rev-list' without the check_unsafe_options guard present in

[CVE catalog]

Severity: Medium · CVSS 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Published: Aug 3, 2026, 8:23:17 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.36% · Oct 25, 2026

GitPython before 3.1.56 contains an argument injection vulnerability in the Commit.count() method, which forwards keyword arguments to 'git rev-list' without the check_unsafe_options guard present in the sibling iter_items method. An attacker who can control options passed to Commit.count (e.g., via an application that forwards a user-supplied options dict) can supply output=<path>, causing 'git rev-list --output=<path>' to open and truncate the target file to zero bytes before revision parsing. This allows destruction/blanking of an arbitrary file at the process's privilege level (no content control, 0-byte truncation).

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	python-git	sid	`3.2.1-1`	fixed
Debian	python-git	forky	`3.2.1-1`	fixed
Debian	python-git	trixie	`3.1.44-1`	vulnerable
Debian	python-git	bookworm	`3.1.30-1+deb12u2`	vulnerable
Cpe	gitpython	Not reported	`3.1.56`	fixed
PyPI	gitpython	Not reported	`3.1.56`	fixed
PyPI	gitpython	Not reported	`3.1.56`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	python-git	source	sid	`3.1.61-1`	not yet assigned	Not reported	[1144344]
Debian	python-git	source	forky	`3.1.61-1`	not yet assigned	Not reported	[1144344]
Debian	python-git	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1144344]
Debian	python-git	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1144344]
Cpe	gitpython	cpe	Not reported	`3.1.56`	Not reported	NVD-CVE-2026-73621	Not reported
PyPI	gitpython	PyPI	Not reported	`3.1.56`	Not reported	PYSEC-2026-3950	Not reported
PyPI	gitpython	PyPI	Not reported	`3.1.56`	Not reported	GHSA-P538-C434-8V24	Not reported

[Debian bug #1144344]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[python3-git]Affected
Source package: [python-git]
Details (2)
- 3.1.30-1+deb12u2 · all · bookworm
  Affected
  nvd · python-git · debian · bookworm; nvd · python-git · debian · 12
- 3.1.30-1+deb12u2 · all · bookworm
  Affected
  nvd · python-git · debian · bookworm; nvd · python-git · debian · 12
[python-git-doc]Affected
Source package: [python-git]
Details (2)
- 3.1.30-1+deb12u2 · all · bookworm
  Affected
  nvd · python-git · debian · bookworm; nvd · python-git · debian · 12
- 3.1.30-1+deb12u2 · all · bookworm
  Affected
  nvd · python-git · debian · bookworm; nvd · python-git · debian · 12

[Debian 13 (Trixie)]

[python3-git]Affected
Source package: [python-git]
Details (2)
- 3.1.44-1 · all · trixie
  Affected
  nvd · python-git · debian · 13
- 3.1.44-1 · all · trixie
  Affected
  nvd · python-git · debian · 13
[python-git-doc]Affected
Source package: [python-git]
Details (2)
- 3.1.44-1 · all · trixie
  Affected
  nvd · python-git · debian · 13
- 3.1.44-1 · all · trixie
  Affected
  nvd · python-git · debian · 13

Observed: Oct 25, 2026, 7:24:00 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]