Vulnerability · Published Sep 9, 2026 · Assigned by VulnCheck

CVE-2026-87819GitPython before 3.1.60 Denial of Service via ReDoS

High 7.5

In plain English

A high-severity regular-expression denial of service in GitPython from gitpython-developers. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 55.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	python-git	3.1.30-1+deb12u3	DEBIAN-CVE-2026-87819
Debian:13	python-git	3.1.44-1+deb13u1	DEBIAN-CVE-2026-87819
Debian:14	python-git	3.1.61-1	DEBIAN-CVE-2026-87819
PyPI	gitpython	3.1.60	GHSA-g5vv-9gxw-82hx
PyPI	gitpython	3.1.60	PYSEC-2026-3984

Affected products (as reported)

Vendor	Product	Versions
gitpython-developers	GitPython	0 – before 3.1.60

Weakness: CWE-1333 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-g5vv-9gxw-82hx) vendor-advisory
VulnCheck Advisory: GitPython before 3.1.60 Denial of Service via ReDoS third-party-advisory