Unrated severityNVD Advisory· Published Aug 1, 2023· Updated Nov 20, 2025

Inefficient Regular Expression Complexity in GitLab

CVE-2023-3364

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.

Affected products

GitLab Inc./GitLabv5
cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Range: 8.14
GitLab Inc./CE/EEllm-fuzzy
Range: >=8.14 <16.0.8, >=16.1 <16.1.3, >=16.2 <16.2.2
osv-coords
pkg:bitnami/gitlab
Range: >= 8.14.0, < 16.0.8

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

hackerone.com/reports/1959727mitretechnical-descriptionexploitpermissions-required
gitlab.com/gitlab-org/gitlab/-/issues/415995mitreissue-tracking

News mentions

GitLab Security Release: 16.2.2, 16.1.3, and 16.0.8
GitLab Security Releases · Aug 1, 2023

cvss	0.000
epss	0.004
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000