What is CVE-2025-12983?

CVE-2025-12983 is a low-severity vulnerability in Gitlab, classified under CWE-789. CVSS score: 3.5/10. Published 2025-11-15.

How severe is CVE-2025-12983?

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

Vulnerability in Gitlab

CVE-2025-12983

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns.

EPSS: 0.004 (33.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Gitlab — versions 16.9, 18.4, 18.5

Weakness classification (CWE)

CWE-789

References

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

Frequently asked questions

What is CVE-2025-12983?: CVE-2025-12983 is a low-severity vulnerability in Gitlab, classified under CWE-789. CVSS score: 3.5/10. Published 2025-11-15.
How severe is CVE-2025-12983?: Low severity. CVSS v3 base score is 3.5 out of 10.