CVE-2026-76220CWE-88

CVE-2026-76220

High · published August 19, 2026

CVSS v3.1

8.8

EPSS

Percentile

59.6

In the wild

Unconfirmed

What it is

GitPython before 3.1.58 contains a command execution vulnerability in the check_unsafe_options guard that can be bypassed by combining a single-character kwarg with split_single_char_options=False. Attackers can supply a crafted kwargs dictionary to guarded methods like clone_from to emit a joined token parsed as --upload-pack, enabling arbitrary OS command execution at default allow_unsafe_options=False.

The record

Technical detail

CVSS v3.1: 8.8 · HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0: 8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS: 0.00910 · 59.6th percentile
Weakness: CWE-88 · Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Published: 2026-08-19T18:17Z

Affected products (1)

Product	Versions	Fixed in
gitpython_project/gitpython	< 3.1.58	3.1.58

References (2)

https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-wvpp-8hx9-p66j · [email protected]https://www.vulncheck.com/advisories/gitpython-before-command-execution-via-split-single-char-options · [email protected]

EPSS history

Timeline

19 AUG 14:02Z
GitPython before 3.1.58 Command Execution via split_single_char_options
cvelistv5