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.

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)

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.

Affected products

Gitpython-developers Gitpython

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (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.