TI-2026-51705 Aliases CVE-2026-73621 GHSA-h75v-4jxv-ppxm

GitPython before 3.1.56 Arbitrary File Truncation via Commit.count

LOW 24CWE-88Published 2026-08-13 · Updated 2026-10-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: None · Low · Low
Fix status: Partial Red Hat: 11 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-88.

Summary

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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0036 30th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial GitPython (gitpython-developers): 3.1.56Red Hat: 11 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
gitpython-developers	GitPython	before 3.1.56	3.1.56	Patch available	CNA

GitPython Vendorgitpython-developers Affected before 3.1.56 Fixed in 3.1.56 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:gitpython_project:gitpython::::::python::*	before 3.1.56	Vulnerable	gitpython-developers

cpe:2.3:a:gitpython_project:gitpython:*:*:*:*:*:python:*:* Versions before 3.1.56 Vulnerable ·gitpython-developers

Remediation

Fix · CNA GitPython (gitpython-developers) Fixed in 3.1.56

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Exploit Intelligence	Affected	No fix yet: Fix deferred
Migration Toolkit for Applications 8	Affected	No fix yet: Fix deferred
Pen Drive Powered by Red Hat Lightspeed	Affected	No fix yet: Fix deferred
Red Hat AI Inference Server	Affected	No fix yet: Fix deferred
Red Hat Ansible Automation Platform 2	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3	Affected	No fix yet: Fix deferred
Red Hat Hardened Images	Affected	No fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)	Affected	No fix yet: Fix deferred
Red Hat OpenStack Platform 16.2	Affected	No fix yet: Fix deferred
Red Hat OpenStack Platform 17.1	Affected	No fix yet: Fix deferred
Red Hat Satellite 6	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-73621
2026-10-03 Alias added: GHSA-h75v-4jxv-ppxm
2026-10-16 Affected versions changed · Red Hat

References

Exploit 1

GitHub Security Advisory (GHSA-p538-c434-8v24)

TI-2026-54689 GitPython before 3.1.59 Path Traversal via separate-git-dir CVSS 4.0HIGH 8.7
TI-2026-51706 GitPython before 3.1.55 Environment Variable Exfiltration via Remote.add() CVSS 4.0HIGH 8.7
TI-2026-47618 GitPython before 3.1.52 Environment Variable Exfiltration via clone_from CVSS 4.0HIGH 8.7
TI-2026-30595 GitPython: Unsafe option check validates multi_options before shlex.split transforms it CVSS 3.1CRITICAL 9.8
TI-2026-32220 GitPython: Path traversal in GitPython reference APIs allows arbitrary file write and delete outside the repository CVSS 4.0HIGH 7.8
TI-2026-47621 GitPython before 3.1.51 Command Injection via option prefix abbreviation CVSS 4.0HIGH 8.7

See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences