EUVD-2026-66430
GHSA-r8m7-3v38-qjrm
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Reporter-level authentication (PR:L) and MR authorship context (UI:R) are required; only approval-rule integrity is affected, with no confidentiality or availability impact.
Primary rating from Vendor (GitLab).
CVSS VectorVendor: GitLab
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Lifecycle Timeline
3DescriptionCVE.org
GitLab has remediated an issue in GitLab EE affecting all versions from 13.1 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with reporter-role permissions who authored a merge request could have reset merge request approval rules due to improper authorization checks.
AnalysisAI
Improper authorization in GitLab Enterprise Edition allows an authenticated reporter-level user who authored a merge request to reset that MR's approval rules, potentially bypassing mandatory code-review controls enforced by administrators. All GitLab EE versions from 13.1 through 19.3.0 are affected, with remediated releases published. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated GitLab EE user holding at minimum reporter-level permissions who has authored the target merge request. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N yields a score of 3.5 (Low). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with a legitimate reporter-level account on a GitLab EE instance authors a merge request on a project that enforces approval rules requiring sign-off from senior engineers. Exploiting the improper authorization check, the attacker resets the approval rules on their own MR - removing required approvers or reducing the approval count to zero. … |
| Remediation | Upgrade to GitLab EE 19.1.7, 19.2.5, or 19.3.1, as documented in the vendor patch release at https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released/. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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