CVE-2025-12029

HIGH

GitLab 15.11-18.4.5, 18.5-18.5.3, 18.6-18.6.1 - Unauthenticated Cross-Site Scripting in Swagger UI

Title source: llm
STIX 2.1

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have, under certain circumstances, allowed an unauthenticated user to perform unauthorized actions on behalf of another user by injecting malicious external scripts into the Swagger UI."

References (3)

Core 3
Core References
Broken Link issue-tracking permissions-required
https://gitlab.com/gitlab-org/gitlab/-/issues/577975
Permissions Required technical-description exploit permissions-required
https://hackerone.com/reports/3317485

Scores

CVSS v3 8.0
EPSS 0.0011
EPSS Percentile 28.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-79
Status published
Products (1)
gitlab/gitlab 15.11.0 - 18.4.6 (2 CPE variants)
Published Dec 11, 2025
Tracked Since Feb 18, 2026