What’s Vulnerable › Vulnerabilities

CVE-2026-110856: GitPython before 3.2.0 ReDoS via _re_actor_epoch in parse_actor_and_date

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-20
• Weakness: CWE-1333

Description

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.

Affected products

• Pypi Gitpython: before 3.2.0; 0.1.7, 0.2.0-beta1, 0.3.0-beta1, 0.3.0-beta2, 0.3.1-beta2, 0.3.2 (+109) — fixed in 3.2.0
• gitpython-developers GitPython: before 3.2.0 — fixed in 3.2.0

How to fix

Upgrade to a fixed version: Pypi Gitpython 3.2.0; gitpython-developers GitPython 3.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-m64x-33q8-m5h7
• https://www.vulncheck.com/advisories/gitpython-before-3.2.0-redos-via-re-actor-epoch-in-parse-actor-and-date
• https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-m64x-33q8-m5h7

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