Vulnerability record · CVE-2025-12029 · published 11 December 2025

CVE-2025-12029: Gitlab cross-site scripting vulnerability

Gitlab · Gitlab

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."

8.0 CVSS 3.1 High EPSS 0.53% · top 57.7% CWE-79 · Cross-site scripting

8.0CVSS 3.1 base score

0.53%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Gitlab Gitlab

References

Link	Tags
https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/	Release NotesVendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/577975	Broken Link
https://hackerone.com/reports/3317485	Permissions Required

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-12029), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.