Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Network-accessible GraphQL endpoint, PR:H because auditor role is required, integrity-only impact limited to compliance records, no scope change.
Primary rating from Vendor (gitlab).
CVSS VectorVendor: gitlab
Lifecycle Timeline
2DescriptionCVE.org
GitLab has remediated an issue in GitLab EE affecting all versions from 18.2 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2 that under certain conditions could have allowed an authenticated user with auditor-level access to modify compliance violation records due to improper authorization on certain GraphQL operations.
AnalysisAI
Improper authorization on GitLab EE GraphQL operations permits authenticated users holding auditor-level access to write modifications to compliance violation records - an action that role should not permit. Affected versions span all GitLab EE releases from 18.2 through the patched thresholds (18.11.7, 19.0.4, 19.1.2). No public exploit code exists and CISA KEV does not list this vulnerability; with CVSS 2.7 and PR:H, real-world impact is narrow but meaningful for organizations relying on compliance audit trails for regulatory evidence.
Technical ContextAI
GitLab EE exposes compliance management features - including violation records - via its GraphQL API. The root cause is CWE-863 (Incorrect Authorization): certain GraphQL mutation or query operations failed to enforce that the requesting principal holds a role with write permissions, accepting auditor-level tokens where only higher-privileged roles should succeed. Auditor roles in GitLab EE are explicitly designed as read-only observers for compliance workflows; the bypass undermines that trust boundary. Affected CPE scope covers GitLab EE versions 18.2.x through 18.11.6, 19.0.x through 19.0.3, and 19.1.x through 19.1.1 as reported by EUVD-2026-42408.
RemediationAI
Upgrade GitLab EE to a patched release: 18.11.7, 19.0.4, or 19.1.2 depending on the current release train in use. Patch details are published in the GitLab patch release advisory at https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-2-released/. If immediate upgrade is not feasible, restrict auditor-level role assignments to only trusted internal personnel pending patching, since the exploitation prerequisite is an active auditor session. Additionally, review compliance violation records for unexpected modifications as a detection measure - GitLab EE audit logs should capture GraphQL mutations. No workaround that disables the affected GraphQL operations without broader feature degradation has been published.
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Same weakness CWE-863 – Incorrect Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-42408
GHSA-7j3x-j5f8-qr4f