Code Injection in GitPython - CVE-2026-78676
Published: August 26, 2026
Vulnerability identifier: #VU145793
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-78676
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to code injection in GitConfigParser._write()/write_section() in git/config.py when re-serializing previously parsed multi-line git-config values during an unrelated config write. A remote attacker can supply a crafted config value that is rewritten into a live injected directive such as core.hooksPath to execute arbitrary code.
Exploitation requires an attacker-influenced config file to be opened read-write and later flushed through any legitimate write operation. The injected directive becomes active on a subsequent hook-firing git operation.
Affected software
GitPython
How to mitigate CVE-2026-78676
Install security update from vendor's website.
GitPython - update to 3.1.59