What is CVE-2026-73623?

CVE-2026-73623 is a high-severity vulnerability in Gitpython-Developers Gitpython, classified under OS Command Injection. CVSS score: 7.5/10. Published 2026-08-13.

How severe is CVE-2026-73623?

High severity. CVSS v3 base score is 7.5 out of 10.

RCE in Gitpython-Developers Gitpython

CVE-2026-73623

GitPython before 3.1.54 contains an incomplete denylist in unsafe_git_clone_options that omits --template, allowing attackers to achieve arbitrary command execution during clone operations. Attackers can supply --template pointing to a directory containing malicious post-checkout hooks that execute when git clones the repository.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-08-13 · last modified 2026-09-03.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.0th percentile), scored 2026-09-27.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.008 · change: +0.001

Affected products

Gitpython-Developers Gitpython — versions 0, 3.1.54
Gitpython Project

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/gitpython-developers/GitPython/security/advisories/GHSA-6p8h-3wgx-97… (Exploit, vendor-advisory, Vendor Advisory)
www.vulncheck.com/advisories/gitpython-before-remote-code-execution-via-template (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-73623?: CVE-2026-73623 is a high-severity vulnerability in Gitpython-Developers Gitpython, classified under OS Command Injection. CVSS score: 7.5/10. Published 2026-08-13.
How severe is CVE-2026-73623?: High severity. CVSS v3 base score is 7.5 out of 10.