Insecure Direct Object Reference in Grav API Plugin for Grav CMS
CVE-2026-42843

8.8HIGH

Key Information:

Vendor

Getgrav

Status
Grav-plugin-api
Vendor
CVE Published:
11 May 2026

What is CVE-2026-42843?

The Grav API Plugin for Grav CMS exhibits a vulnerability where an insecure direct object reference and logic flaw in the UsersController::update function allows authenticated users with minimal API access to alter their own permission settings. This exploit can potentially enable an attacker to gain Super Administrator privileges, compromising the system completely and possibly leading to remote code execution (RCE). The issue has been addressed in version 1.0.0-beta.15.

Affected Version(s)

grav-plugin-api < 1.0.0-beta.15

References

https://github.com/getgrav/grav/security/advisories/GHSA-...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.