Vulnerability · Published Oct 13, 2026 · Assigned by GitLab

CVE-2026-16301Incorrect Authorization in GitLab

High 8.5

In plain English

A high-severity incorrect authorization 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 0.3% (higher than 27% of all known vulnerabilities).

Severity (CVSS 3.1)8.5High

Exploit odds (30 days)0.3%top 73.0% 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 18.7 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user with Developer role to execute CI/CD pipelines on protected branches without authorization due to improper authorization checks in the downstream pipeline creation service.

Affected products (as reported)

Vendor	Product	Versions
GitLab	GitLab	18.7 – before 19.2.819.3 – before 19.3.519.4 – before 19.4.2

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/606501
HackerOne Bug Bounty Report #3853866 technical-description, exploit, permissions-required
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/