GitLabCVE-2026-4879

GitLab: missing authorization

Medium4.3CVE-2026-4879 · Published Aug 12, 2026 · updated Aug 19, 2026

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.

GitLab advisory

Affected versions

Package	Affected	Fixed in
GitLab Product	>= 16.0, < 19.0.6	19.0.6
	>= 19.1, < 19.1.4	19.1.4
	>= 19.2, < 19.2.2	19.2.2

Details and references

CVSS 3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Severity from: the vendor (its own CVE record or advisory)
Weakness: CWE-862

More GitLab advisories

All GitLab

Date	Advisory	Severity	Fixed in
Aug 12	GitLab: missing authorization Medium4.3Aug 12 CVE-2026-682119.0.6+2 more	Medium4.3	19.0.6+2 more
Aug 12	GitLab: improper authorization High8.5Aug 12 CVE-2026-1922819.1.4+1 more	High8.5	19.1.4+1 more
Aug 12	GitLab: improper authorization Medium4.3Aug 12 CVE-2026-1843319.1.4+1 more	Medium4.3	19.1.4+1 more
Aug 12	GitLab: missing authorization High7.1Aug 12 CVE-2026-1649419.1.4+1 more	High7.1	19.1.4+1 more
Aug 12	GitLab: cross-site scripting High8.7Aug 12 CVE-2026-1521619.0.6+2 more	High8.7	19.0.6+2 more
Aug 12	GitLab: cross-site scripting High8.7Aug 12 CVE-2026-1521719.0.6+2 more	High8.7	19.0.6+2 more

Affected versions

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