EUVD-2026-65208
GHSA-qw9m-fc79-372g
Severity 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
Requires an authenticated api.users.write operator (PR:L, not PR:N); direct effect is removing a lockout control (I:L), with no direct confidentiality or availability loss, takeover only via follow-on brute force.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
Grav Login plugin versions before 1.0.16 fail to validate the target account's privilege level in the onApiUserListRowAction unlock handler. An attacker with api.users.write permission can clear login lockout counters on admin.super accounts, removing brute-force protection from the highest-privilege accounts without requiring equivalent permissions.
AnalysisAI
Broken authorization in the Grav Login plugin before 1.0.16 lets an operator holding the api.users.write permission clear login lockout counters on admin.super accounts through the onApiUserListRowAction unlock handler, which never checks the target account's privilege tier. This strips brute-force protection from the highest-privilege accounts, enabling a lower-privileged user to set up password-guessing against super-admin credentials. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already possess an authenticated Grav account holding the api.users.write permission - this is a limiting prerequisite, not a default-open condition, and directly contradicts the PR:N in the supplied CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is best understood as a security-control-removal / privilege-boundary flaw rather than direct code execution or data theft. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade the Grav Login plugin to version 1.0.16 or later, which adds the missing privilege-level validation to the unlock handler (Vendor-released patch: 1.0.16); this is the primary and recommended fix per advisory GHSA-985r-mpj8-5rqw. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all systems running Grav with the Login plugin and inventory current versions; immediately restrict api.users.write permissions to only essential administrative staff and enable comprehensive logging of all unlock actions. …
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Same weakness CWE-863 – Incorrect Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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