CVE-2026-4879: Missing Authorization in GitLab
GitLab has remediated an issue in GitLab EE affecting all versions from 16.0 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 with developer-role permissions to view external status check configuration restricted to higher-privileged roles due to missing authorization on a merge request API endpoint.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
GitLab EEto a version that resolves this vulnerability.Fixed in 19.0.6 - Upgrade
Upgrade
GitLab EEto a version that resolves this vulnerability.Fixed in 19.1.4 - Upgrade
Upgrade
GitLab EEto a version that resolves this vulnerability.Fixed in 19.2.2
Event History
Frequently Asked Questions
What is the severity of CVE-2026-4879?
The severity of CVE-2026-4879 is rated as medium with a score of 4.3.
How do I fix CVE-2026-4879?
To fix CVE-2026-4879, update GitLab EE to versions 19.0.6, 19.1.4, or 19.2.2 or later.
What is the risk associated with CVE-2026-4879?
CVE-2026-4879 has a risk score of 22, indicating a potential medium level of impact.
Who is affected by CVE-2026-4879?
CVE-2026-4879 affects all GitLab EE versions from 16.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2.
What type of vulnerability is CVE-2026-4879?
CVE-2026-4879 is classified as a Missing Authorization vulnerability.