Vulnerability in Gitpython-Developers Gitpython
CVE-2026-87819
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.
Vulnerability class: ReDoS (Regular Expression Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (43.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-g5vv-9gxw-82hx) (vendor-advisory, Exploit, Mitigation, Vendor Advisory)
- VulnCheck Advisory: GitPython before 3.1.60 Denial of Service via ReDoS (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-87819?
- CVE-2026-87819 is a high-severity vulnerability in Gitpython-Developers Gitpython, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-09-09.
- How severe is CVE-2026-87819?
- High severity. CVSS v3 base score is 7.5 out of 10.