CVE-2026-73623 GitPython before 3.1.54 Remote Code Execution via --template
Attackers can execute arbitrary commands via malicious post-checkout hooks during Git clone operations due to an incomplete denylist in GitPython.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-73623?
CVE-2026-73623 is a high-severity command injection vulnerability in gitpython-developers GitPython, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-78
Which versions are affected by CVE-2026-73623?
3 open source packages ship an affected version, including gitpython and GitPython. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitpython PyPI | All versions | 3.1.54 |
gitpython PyPI | All versions | 3.1.54 |
GitPython PyPI | All versions | 3.1.54 |
Products include Gitpython Project Gitpython.
How do I fix CVE-2026-73623?
Upgrade gitpython to 3.1.54 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-73623 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73623 exists.
Other vulnerabilities in gitpython-developers GitPython
- CVE-2023-40267 GitPython vulnerable to remote code execution due to insufficient sanitization of input arguments
- CVE-2026-78676 GitPython before 3.1.59 Remote Code Execution via Config Injection
- CVE-2026-67324 GitPython 3.1.50 Authentication Bypass via Joined Short Options
- CVE-2026-42215 GitPython: Command injection via Git options bypass
- CVE-2026-87817 GitPython before 3.1.60 Remote Code Execution via Git Directory Impersonation
Sources
Also known as DEBIAN-CVE-2026-73623, ECHO-635a-010c-fdcb, ECHO-df95-8ddf-5d24, GHSA-2726-phmx-rc26, GHSA-6p8h-3wgx-97gf, MINI-2j99-f2v9-4886 and 8 more.