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).
History

Sat, 15 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 14 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 14 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Gitpython Project
Gitpython Project gitpython
CPEs cpe:2.3:a:gitpython_project:gitpython:*:*:*:*:*:python:*:*
Vendors & Products Gitpython Project
Gitpython Project gitpython

Thu, 13 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Gitpython-developers
Gitpython-developers gitpython
Vendors & Products Gitpython-developers
Gitpython-developers gitpython

Thu, 13 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
Description 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).
Title GitPython before 3.1.56 Arbitrary File Truncation via Commit.count
Weaknesses CWE-88
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-08-13T11:28:22.108Z

Updated: 2026-08-14T18:10:19.023Z

Reserved: 2026-08-13T11:17:25.160Z

Link: CVE-2026-73621

cve-icon Vulnrichment

Updated: 2026-08-14T18:02:52.534Z

cve-icon NVD

Status : Received

Published: 2026-08-13T12:17:27.200

Modified: 2026-08-14T19:18:00.800

Link: CVE-2026-73621

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-13T11:28:22Z

Links: CVE-2026-73621 - Bugzilla