Vulnerability details

CVE-2026-76220

gitpython-developers GitPython

GitPython before 3.1.58 Command Execution via split_single_char_options

CVSS 4.0

8.7High

Official description

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.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`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`
8.8High	3.1	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
gitpython-developers	GitPython	v < 3.1.58	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-wvpp-8hx9-p66j vendor-advisory
https://www.vulncheck.com/advisories/gitpython-before-command-execution-via-split-single-char-options third-party-advisory

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Details

Published: 2026-08-19
Last updated: 2026-10-08
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

0.59%

Probability of exploitation in 30 days

48.4%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-88
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')