CVE-2026-110856
GitPython before 3.2.0 ReDoS via _re_actor_epoch in parse_actor_and_date
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 14, 2026
- Updated
- Oct 20, 2026
- Reserved
- Oct 14, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-1333 Inefficient Regular Expression Complexity
Affected Products
| Product | Versions |
|---|---|
GitPythongitpython-developers |
|
References
- GitHub Security Advisory (GHSA-m64x-33q8-m5h7)vendor-advisory
- VulnCheck Advisory: GitPython before 3.2.0 ReDoS via _re_actor_epoch in parse_actor_and_datethird-party-advisory
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