Vulnerability · Published May 27, 2026 · Assigned by GitLab
CVE-2026-2601Missing Authorization in GitLab
Medium 4.3
In plain English
A medium-severity missing authorization in GitLab from GitLab. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.2%top 84.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
GitLab has remediated an issue in GitLab EE affecting all versions from 11.5 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that under certain conditions could have allowed an authenticated user with developer-role permissions to access sensitive deployment data on projects due to improper authorization checks.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- HackerOne Bug Bounty Report #3556381 technical-description, exploit, permissions-required
- https://gitlab.com/gitlab-org/gitlab/-/work_items/590389
- https://about.gitlab.com/releases/2026/05/27/patch-release-gitlab-19-0-1-released/