EUVD-2026-39175
GHSA-r9m9-87p7-xj9f
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Network-accessible IDOR requiring only authenticated low-privilege session; no availability impact; confidentiality and integrity both Low as only cleanup policy settings are exposed.
Primary rating from Vendor (gitlab).
CVSS VectorVendor: gitlab
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
GitLab has remediated an issue in GitLab EE affecting all versions from 18.6 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user to read or modify another group's virtual registry cleanup policy settings without authorization.
AnalysisAI
Authorization bypass in GitLab Enterprise Edition's virtual registry cleanup policy feature allows authenticated users to read or modify cleanup policy settings belonging to groups they do not own. Affected versions span all GitLab EE releases from 18.6 through 18.11.5, 19.0 through 19.0.2, and 19.1.0. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated GitLab EE session - at minimum a user account with PR:L (low-privilege). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.4 Medium score reflects a realistic but bounded impact: confidentiality and integrity are both rated Low, availability is unaffected, and scope is unchanged. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated GitLab EE user with access to any group enumerates group IDs via the GitLab API or UI, then crafts direct API requests to the virtual registry cleanup policy endpoint substituting a target group's ID for their own. Because the authorization check is insufficient, the server processes the request, returning or accepting policy modifications for the foreign group. … |
| Remediation | Upgrade GitLab EE to version 18.11.6, 19.0.3, or 19.1.1 as confirmed by the vendor patch release advisory at https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released/. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same technique Authentication Bypass
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External POC / Exploit Code
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