8.8High
CVE-2026-42843grav-plugin-api: Grav API Privilege Escalation to Super Admin
Description
Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content, media, configuration, users, and system management. Prior to 1.0.0-beta.15, an insecure direct object reference and logic flaw in the Grav API plugin (UsersController::update) allows any authenticated user with basic API access (api.access) to modify their own permission configuration. An attacker can exploit this to escalate their privileges to Super Administrator (admin.super and api.super), leading to full system compromise and potential RCE. This vulnerability is fixed in 1.0.0-beta.15.
Weakness (CWE):
CWE-863
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| getgrav | grav-plugin-api | < 1.0.0-beta.15 |
References and patches
- https://github.com/getgrav/grav/security/advisories/GHSA-r945-h4vm-h736 ExploitVendor Advisory
CPE matches (NVD) (14)
cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta1:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta10:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta11:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta12:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta13:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta14:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta2:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta3:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta4:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta5:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta6:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta7:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta8:*:*:*:*:*:*cpe:2.3:a:getgrav:grav-plugin-api:1.0.0:beta9:*:*:*:*:*:*