Vulnerability in Gitpython-Developers Gitpython
CVE-2026-110856
GitPython before 3.2.0 contains a regular expression denial of service vulnerability in the _re_actor_epoch pattern used by parse_actor_and_date on author, committer, and tagger lines. Attackers can serve repositories with commit or tag objects containing long space-filled lines lacking a valid epoch or timezone, causing quadratic backtracking and CPU exhaustion.
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
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/gitpython-developers/GitPython/security/advisories/GHSA-m64x-33q8-m5… (vendor-advisory)
- www.vulncheck.com/advisories/gitpython-before-3.2.0-redos-via-re-actor-epoch-in… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110856?
- CVE-2026-110856 is a high-severity vulnerability in Gitpython-Developers Gitpython, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2026-10-14.
- How severe is CVE-2026-110856?
- High severity. CVSS v3 base score is 7.5 out of 10.