CVE-2026-16301

HIGH 8.5

Incorrect Authorization in GitLab

CVSS Score

8.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Oct 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

High

Availability

None

Affected Versions

GitLab / GitLab

18.7 < 19.2.8 19.3 < 19.3.5 19.4 < 19.4.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/606501 hackerone.com: https://hackerone.com/reports/3853866 docs.gitlab.com: https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/

Credits

Thanks [sim4n6](https://hackerone.com/sim4n6) for reporting this vulnerability through our HackerOne bug bounty program