What is CVE-2025-12029?

CVE-2025-12029 is a high-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2025-12-11.

How severe is CVE-2025-12029?

High severity. CVSS v3 base score is 8.0 out of 10.

XSS in Gitlab

CVE-2025-12029

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 unauthorize…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (38.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N.

Affected products

Gitlab — versions 15.11, 18.5, 18.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@gitlab.com (issue-tracking, permissions-required, Broken Link)
cve@gitlab.com (Permissions Required, technical-description, permissions-required, exploit)
cve@gitlab.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2025-12029?: CVE-2025-12029 is a high-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2025-12-11.
How severe is CVE-2025-12029?: High severity. CVSS v3 base score is 8.0 out of 10.