CVE-2023-3364

Inefficient Regular Expression Complexity in GitLab

State: Published
Severity: 7.5 High
Published: Aug 1, 2023
Updated: Nov 20, 2025
Reserved: Jun 22, 2023

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.14 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use AutolinkFilter to the preview_markdown endpoint.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitLab

Weaknesses

CWE-1333 Inefficient Regular Expression Complexity

Affected Products

Product	Versions
GitLabGitLab	8.14 to before 16.0.8Affected 16.1 to before 16.1.3Affected 16.2 to before 16.2.2Affected

References

GitLab Issue #415995issue-tracking
HackerOne Bug Bounty Report #1959727technical-descriptionexploitpermissions-required

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