CVE-2023-3424

HIGH

GitLab 10.3.0-15.11.9, 16.0.0-16.0.5, 16.1.0 - Denial of Service via Preview Markdown Endpoint

Title source: llm
STIX 2.1

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.3 before 15.11.10, all versions starting from 16.0 before 16.0.6, all versions starting from 16.1 before 16.1.1. A Regular Expression Denial of Service was possible via sending crafted payloads to the preview_markdown endpoint.

References (2)

Core 2
Core References
Broken Link, Vendor Advisory issue-tracking
https://gitlab.com/gitlab-org/gitlab/-/issues/409802
Third Party Advisory technical-description exploit
https://hackerone.com/reports/1960970

Scores

CVSS v3 7.5
EPSS 0.0076
EPSS Percentile 50.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-1333
Status published
Products (1)
gitlab/gitlab 10.3.0 - 15.11.10 (2 CPE variants)
Published Jul 13, 2023
Tracked Since Feb 18, 2026