Vulnerability · Published Mar 11, 2026 · Assigned by GitLab
CVE-2025-14513Improper Validation of Specified Quantity in Input in GitLab
High 7.5
In plain English
A high-severity security flaw in GitLab from GitLab. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 53.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.11 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an unauthenticated user to cause a denial of service condition due to improper input validation when processing specially crafted JSON payloads in the protected branches API.
Affected products (as reported)
Weakness: CWE-1284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- HackerOne Bug Bounty Report #3452477 technical-description, exploit, permissions-required
- https://gitlab.com/gitlab-org/gitlab/-/work_items/583718
- https://about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/