CVE-2026-6821: Missing Authorization in GitLab
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 19.0.6 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 19.1.4 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 19.2.2
Event History
Frequently Asked Questions
What is the severity of CVE-2026-6821?
The severity of CVE-2026-6821 is classified as medium with a score of 4.3.
How do I fix CVE-2026-6821?
To fix CVE-2026-6821, upgrade GitLab EE to version 19.0.6 or later, 19.1.4 or later, or 19.2.2 or later.
What systems are affected by CVE-2026-6821?
CVE-2026-6821 affects GitLab EE versions from 12.0 up to but not including 19.0.6, 19.1 up to but not including 19.1.4, and 19.2 up to but not including 19.2.2.
What type of vulnerability is CVE-2026-6821?
CVE-2026-6821 is a missing authorization vulnerability in GitLab that could allow authenticated users to bypass IP-based access restrictions.
What information could be exposed by CVE-2026-6821?
CVE-2026-6821 could allow authenticated users to read limited merge request information from private projects.