Vulnerability · Published May 14, 2026 · Assigned by GitLab
CVE-2025-14869Improper Validation of Specified Quantity in Input in GitLab
High 7.5
In plain English
A high-severity security flaw in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 70.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by sending specially crafted payloads on certain API endpoints.
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 #3447146 technical-description, exploit, permissions-required
- https://gitlab.com/gitlab-org/gitlab/-/work_items/584489
- https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/