CVE-2026-87819 GitPython before 3.1.60 Denial of Service via ReDoS
Attackers can cause denial of service in GitPython by crafting malicious commit objects that trigger excessive CPU usage via regex backtracking.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-87819?
CVE-2026-87819 is a high-severity denial of service vulnerability in gitpython-developers GitPython, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.name_email_regex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic backtracking, exhausting CPU resources for over two minutes per commit access.
Weakness: CWE-1333
Which versions are affected by CVE-2026-87819?
3 open source packages ship an affected version, including gitpython and GitPython. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
gitpython PyPI | All versions | 3.1.60 |
gitpython PyPI | All versions | 3.1.60 |
GitPython PyPI | All versions | 3.1.60 |
Products include Gitpython Project Gitpython.
How do I fix CVE-2026-87819?
Upgrade gitpython to 3.1.60 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-87819 being exploited?
There is no known exploitation of CVE-2026-87819 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-2026-87817 GitPython before 3.1.60 Remote Code Execution via Git Directory Impersonation
Sources
Also known as DEBIAN-CVE-2026-87819, ECHO-5764-2a31-d004, GHSA-g5vv-9gxw-82hx, MGASA-2026-0450, MINI-39hm-j9xq-v3xw, MINI-gxp9-rcv9-464v and 4 more.