Vulnerability · Published Apr 8, 2026 · Assigned by GitLab
CVE-2026-1092Improper 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 47% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 53.1% 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 12.10 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an unauthenticated user to cause denial of service due to improper input validation of JSON payloads.
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 #3487030 technical-description, exploit, permissions-required
- https://gitlab.com/gitlab-org/gitlab/-/work_items/586479
- https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/