EUVD-2026-42405
GHSA-mj6c-rwfc-g9jh
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
PR:L confirmed as exploitation requires an authenticated low-privilege account; C:L reflects metadata-only disclosure with no code, secret, or integrity impact.
Primary rating from Vendor (gitlab).
CVSS VectorVendor: gitlab
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
2DescriptionCVE.org
GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 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 minimal access permissions to read work item metadata from private projects due to missing authorization checks.
AnalysisAI
Work item metadata in GitLab EE is exposed to authenticated users holding only minimal project permissions due to missing authorization checks on affected API or web endpoints, enabling unauthorized reads of private project data. Affected deployments span GitLab EE 18.9 through pre-18.11.7, 19.0 through pre-19.0.4, and 19.1 through pre-19.1.2, with patched releases now available from the vendor. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated GitLab EE account with at least minimal access permissions on the target instance - the CVSS PR:L metric confirms a low-privilege account (such as a guest role) is sufficient; unauthenticated access is not sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.3 Medium score and vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N) are internally consistent with the described flaw: network-accessible, trivially reproducible in low-complexity conditions, but requiring an authenticated low-privilege account and producing only limited confidentiality impact scoped to work item metadata. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated GitLab EE user - for example, a guest-level member invited to a single low-sensitivity project - crafts API or GraphQL requests targeting work item endpoints of unrelated private projects on the same instance. Due to the missing authorization check, the server returns work item metadata such as titles, labels, assignees, and milestones from those private projects. … |
| Remediation | Upgrade GitLab EE to 18.11.7, 19.0.4, or 19.1.2 - whichever corresponds to your active release track - per the vendor patch release at https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-2-released/. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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