What is CVE-2025-12571?

CVE-2025-12571 is a high-severity vulnerability in Gitlab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-11-26.

How severe is CVE-2025-12571?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Gitlab

CVE-2025-12571

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that could have allowed an unauthenticated user to cause a Denial of Service condition by sending specifically crafted requests containing malicious JSON payloads.

EPSS: 0.005 (39.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Gitlab — versions 17.10, 18.5, 18.6.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

cve@gitlab.com (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-2025-12571?: CVE-2025-12571 is a high-severity vulnerability in Gitlab, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2025-11-26.
How severe is CVE-2025-12571?: High severity. CVSS v3 base score is 7.5 out of 10.