EUVD-2026-66394Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network low-complexity attack but requires a valid super-admin-owned scoped API key, so PR:L not PR:N; full compromise of targeted accounts gives C:H/I:H/A:H within the app scope.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
The getgrav/grav-plugin-api plugin before 1.0.18 does not enforce API-key scope in the requireNotSuperTarget() function in UsersController.php across seven sensitive user-management endpoints. The check uses isSuperAdmin() on the acting account rather than verifying whether the specific API key carries super authority (via isSuperWithinScope()). As a result, an API key scoped below full super authority but belonging to a super-admin account can act against other super-admin accounts-disabling their 2FA, deleting their avatar, minting new API keys under their identity, or deleting their existing API keys.
Articles & Coverage 1
AnalysisAI
Broken authorization in getgrav/grav-plugin-api before 1.0.18 lets a scoped API key that belongs to a super-admin account perform privileged user-management actions it was never scoped for. Across seven sensitive endpoints the requireNotSuperTarget() guard in UsersController.php checks isSuperAdmin() on the underlying account instead of whether the presented key carries super authority (isSuperWithinScope()), so a deliberately down-scoped key can act against other super-admin accounts-disabling their 2FA, deleting avatars, and minting or deleting their API keys. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires possession of a valid grav-plugin-api API key that belongs to a super-admin account but is scoped below full super authority, and the target Grav instance must run the plugin at a version before 1.0.18 with the API reachable by the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The supplied CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H) scores 9.3, but PR:N conflicts with the description, which plainly requires the attacker to already hold a valid API key belonging to a super-admin account-i.e., meaningful prior privilege. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An operator issues a deliberately down-scoped API key under a super-admin account for a limited automation task; an attacker who obtains that key (or a malicious insider holding it) calls the affected user-management endpoints to disable another super-admin's 2FA and mint a new API key under that victim's identity, achieving full account takeover. Because the vector is network-based with low complexity, the actions are simple authenticated HTTP requests once the key is in hand; no public POC is identified in the provided data. |
| Remediation | Upgrade grav-plugin-api to version 1.0.18 or later, which corrects requireNotSuperTarget() to evaluate the presented key's authority via isSuperWithinScope() rather than the account's isSuperAdmin() role (see GHSA-94q7-vrqr-cx5v). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all deployments of getgrav/grav-plugin-api and audit the current version; immediately revoke and rotate all existing API keys as emergency containment, and restrict API endpoint access to internal networks only via firewall rules. …
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External POC / Exploit Code
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