GitPython before 3.2.0 Command Execution via ls_remote ext:: URLs

Advisories

GitPython before 3.2.0 Command Execution via ls_remote ext:: URLs

Severity: high
Date: 10/14/2026
Affecting: GitPython >= 0, < 3.2.0
CVE: CVE-2026-110857
CWE: CWE-1287 Improper Validation of Specified Type of Input
CVSS: 7.7
CVSS V4 Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: GitHub Security Advisory (GHSA-w8jc-g24h-crhw)
Credit: wirsbf
Description: GitPython before 3.2.0 contains a remote code execution vulnerability that allows attackers to run commands because Git.ls_remote forwards URLs without check_unsafe_protocols validation. Attackers can supply ext:: remote-helper URLs to execute commands when git permits the ext transport, while merge_base and IndexFile.move also accept unguarded option injection.

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