Path traversal in GitPython - CVE-2026-78677
Published: August 26, 2026
Vulnerability identifier: #VU145794
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-78677
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to create an arbitrary git directory outside the intended destination.
The vulnerability exists due to improper limitation of a pathname to a restricted directory in Repo.clone_from()/Repo.clone() option handling when forwarding a caller-controlled separate_git_dir argument to git clone. A remote attacker can supply a specially crafted separate_git_dir path to create an arbitrary git directory outside the intended destination.
Exploitation requires a host application to pass attacker-influenced clone options to the API without rejecting the separate_git_dir argument.
Affected software
GitPython
How to mitigate CVE-2026-78677
Install security update from vendor's website.
GitPython - update to 3.1.59