GitLabCVE-2026-15423

GitLab: improper authorization

CVE-2026-15423 · Published Aug 12, 2026 · updated Aug 19, 2026

High8.5

Fix: upgrade to 19.0.6 or later (3 fixed versions below)

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 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 execute CI/CD pipelines on a protected branch without the required push permissions due to improper authorization in pipeline reference validation.

Affected versions

Package	Affected	Fixed in
GitLab Product	>= 19.0, < 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:C/C:L/I:H/A:N
Severity from: the vendor (its own CVE record or advisory)
Weakness: CWE-863

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