CVE-2026-42843

HIGH EPSS 26.9%
Published May 11, 20261mo ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
High
Find Similar
Published May 11, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
26.9% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

Affected Products 14

VendorProductVersionRange
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any
getgravgrav-plugin-api1.0.0any

References 1

  • github.com https://github.com/getgrav/grav/security/advisories/GHSA-r945-h4vm-h736
    ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.