CVE-2026-6821 Missing Authorization in GitLab

Medium 4.3 Published 12 Aug 2026 Updated 13 Aug 2026

Authenticated users can bypass IP restrictions to read limited merge request data from private projects due to missing authorization checks.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-6821?

CVE-2026-6821 is a medium-severity missing authorization vulnerability in Gitlab Gitlab, published on 12 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-862

Which versions are affected by CVE-2026-6821?

1 open source package ship an affected version, including gitlab. It affects 1 product.

Package	Affected	Fixed in
`gitlab` Bitnami	From `12.0.0`	`19.0.6, 19.1.4, 19.2.2`

Products include Gitlab Gitlab.

How do I fix CVE-2026-6821?

Upgrade gitlab to a fixed version for your release line: 19.0.6, 19.1.4 or 19.2.2.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-6821 being exploited?

There is no known exploitation of CVE-2026-6821 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2026-6821, GHSA-9gxq-p669-5c5h, MINI-675f-6wv2-vmfm, MINI-wg34-2r5x-p9pc.