CVE-2026-4398

Medium

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user could have assigned compliance frameworks from namespaces they were not authorized to access to their own project, due to missing namespace validation on self-managed instances.

SeverityMedium

CVSS5.4

Exploit probability—

Product

Gitlab

PublishedApr 8, 2026

First seenApr 8, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

gitlab gitlab19.1.7, 19.2.5 or later

Affected products

Product	Affected versions	Fixed in
gitlab gitlab	18.3.0 ≤ v < 19.1.7, 19.2.0 ≤ v < 19.2.5, 19.3.0	19.1.7, 19.2.5

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