CVE-2026-87817 GitPython before 3.1.60 Remote Code Execution via Git Directory Impersonation
Attackers can execute arbitrary code by impersonating the git directory and placing malicious hooks, affecting users of the GitPython library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-87817?
CVE-2026-87817 is a high-severity code injection vulnerability in gitpython-developers GitPython, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
GitPython before 3.1.60 fails to properly validate the git directory location, allowing attackers to impersonate the git directory using tracked files like gitdir, commondir, and HEAD. Attackers can execute arbitrary code by placing a malicious pre-commit hook in the tracked hooks directory that executes when a victim calls index.commit() on a cloned or opened repository.
Weakness: CWE-94
Which versions are affected by CVE-2026-87817?
3 open source packages ship an affected version, including gitpython. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitpython PyPI | All versions | 3.1.60 |
gitpython PyPI | All versions | 3.1.60 |
gitpython PyPI | All versions | 3.1.60 |
Products include Gitpython Project Gitpython.
How do I fix CVE-2026-87817?
Upgrade gitpython to 3.1.60 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-87817 being exploited?
There is no known exploitation of CVE-2026-87817 in the wild and no public exploit code.
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-2026-87819 GitPython before 3.1.60 Denial of Service via ReDoS
Sources
Also known as DEBIAN-CVE-2026-87817, ECHO-da18-07c8-f77a, GHSA-239g-whfq-7xj9, MINI-36cp-prvh-9228, MINI-78gr-h522-rmv9, MINI-fvj2-g7hw-46q6 and 3 more.