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Vulnerability record · CVE-2026-87819 · published 9 September 2026

CVE-2026-87819: Gitpython project gitpython inefficient regular expression (redos) vulnerability

Gitpython Project · Gitpython

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.

8.7 CVSS 4.0 High EPSS 0.52% · top 58.1% CWE-1333 · Inefficient regular expression (ReDoS)
8.7CVSS 4.0 base score
0.52%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
18 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-g5vv-9gxw-82hx ExploitMitigationVendor Advisory
https://www.vulncheck.com/advisories/gitpython-before-3.1.60-denial-of-service-via-redos Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-87819), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.