CVE-2026-87819

GitPython before 3.1.60 Denial of Service via ReDoS

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

gitpython-developers · GitPython

CVSS v4.0 VULNCHECK

8.7 HIGHCVSS: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:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.52% chance of exploitation in the next 30 days, 43rd percentile

Published

2026-09-09

Updated

2026-10-08

Proof-of-concept exploits (1)

• advisories/GHSA-g5vv-9gxw-82hx

Security advisories

• gitpython-developers/GitPython/security/advisories/GHSA-g5vv-9gxw-82hx
• https://www.vulncheck.com/advisories/gitpython-before-3.1.60-denial-of-service-via-redos

References

• CVE Record
• NVD entry