What is CVE-2025-12734?

CVE-2025-12734 is a low-severity vulnerability in Gitlab, classified under Improper Encoding or Escaping of Output. CVSS score: 3.5/10. Published 2025-12-11.

How severe is CVE-2025-12734?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Gitlab

CVE-2025-12734

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.6 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to, under certain conditions, render content in dialogs…

EPSS: 0.002 (13.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Gitlab — versions 15.6, 18.5, 18.6

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

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-2025-12734?: CVE-2025-12734 is a low-severity vulnerability in Gitlab, classified under Improper Encoding or Escaping of Output. CVSS score: 3.5/10. Published 2025-12-11.
How severe is CVE-2025-12734?: Low severity. CVSS v3 base score is 3.5 out of 10.