Vulnerability · Published Sep 5, 2026 · Assigned by VulnCheck
CVE-2026-86193Grav API Plugin Authentication Bypass via Group-Inherited Super
High 8.7
In plain English
A high-severity incorrect authorization in grav-plugin-api from getgrav. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).
Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.4%top 69.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
grav-plugin-api before 1.0.20 fails to validate group-inherited super permissions in user-management guards, allowing non-super user managers to modify super-admin accounts. Attackers with api.access and api.users.write can patch password fields on group-super accounts to gain full administrative control.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| getgrav | grav-plugin-api | 0 – before 1.0.20 |
Weakness: CWE-863 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- GitHub Security Advisory (GHSA-vv8m-jqpm-38x4) vendor-advisory
- VulnCheck Advisory: Grav API Plugin Authentication Bypass via Group-Inherited Super third-party-advisory