Is this vulnerability remotely exploitable?

Yes. If the MRCMS instance is reachable over a network, an attacker can remotely invoke the vulnerable endpoint to create a super administrator account, without needing any prior access.

Does an attacker need a valid account to exploit this?

No. The core issue is the lack of authentication and authorization in the `UserController.save()` method, which allows unauthenticated clients to perform privileged user creation.

What is the safest general fix pattern?

The safest approach is to enforce strict authentication and role-based authorization on all user management methods, ensuring that only already-authenticated high-privilege administrators can create or modify administrative accounts, particularly super administrators.

Severity:

CRITICAL RISK

(9.8)

Broken Access Control (CWE-284) in MRCMS User Management Controller

CVE-2026-31272

Published:

Apr 7, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Vulnerability Type

Category:

Broken Access Control

CWE:

CWE-284

Impact:

Privilege Escalation to Super Administrator / Full Application Compromise

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Broken Access Control

CWE:

CWE-284

Impact:

Privilege Escalation to Super Administrator / Full Application Compromise

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Broken Access Control (CWE-284) in MRCMS User Management Controller

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.8)

PHP Code Injection via File Upload (CWE-94) in Aero CMS Admin Post Creation

HIGH RISK

HIGH

(8.8)

Code Injection (CWE-94) via Module Parameters in Evolution CMS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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