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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

20 Oct 2026, 03:17

Type	Values Removed	Values Added
References	~~() https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-m64x-33q8-m5h7 -~~	() https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-m64x-33q8-m5h7 -

14 Oct 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 23:17

Updated : 2026-10-20 03:17

NVD link : CVE-2026-110856

Mitre link : CVE-2026-110856

CVE.ORG link : CVE-2026-110856

JSON object : View

Products Affected

No product.

CWE

CWE-1333

Inefficient Regular Expression Complexity

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