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CVE-2026-42843

8.8 high SSVC exploitation: poc Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 8.8 · getgravNVD modified 2026-10-26 18:10

Affected (CPE criteria) 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:*:*:*:*:*:*

References 2