CVE-2026-6821

MEDIUM 4.3

Missing Authorization in GitLab

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to bypass IP-based access restrictions and read limited merge request information from a private project due to missing authorization checks in a merge requests API endpoint.

CWE	CWE-862
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Aug 12, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

GitLab / GitLab

12.0 < 19.0.6 19.1 < 19.1.4 19.2 < 19.2.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/597702 hackerone.com: https://hackerone.com/reports/3674254 docs.gitlab.com: https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-2-released/

Credits

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