Is this vulnerability remotely exploitable without a CMS account?

Yes. An attacker does not need their own CMS account; they can exploit the issue by inducing a logged-in administrator to load attacker-controlled content that silently submits a forged request.

What level of access does an attacker effectively gain if exploitation succeeds?

Successful exploitation leads to execution of arbitrary PHP code on the server with the privileges of the web server process, effectively granting the attacker full control over the CMS and potentially broader system access.

What is the safest general fix pattern for this kind of issue?

Implement strong anti-CSRF protections on all privileged, state-changing endpoints and avoid exposing direct file or configuration editors for executable files through the web interface.

Severity:

CRITICAL RISK

(9.6)

CSRF-Induced Configuration Overwrite Leading to RCE (CWE-352) in GetSimple CMS massiveAdmin Plugin

CVE-2026-28495

Published:

Mar 10, 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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HIGH RISK

HIGH

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Privilege Escalation via Bypassed Access Control

May 6, 2026

Vulnerability Type

Category:

Cross-Site Request Forgery (CSRF)

CWE:

CWE-352

Impact:

Remote Code Execution via CSRF-Driven Configuration File Overwrite

Severity:

CRITICAL RISK

(9.6)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Request Forgery (CSRF)

CWE:

CWE-352

Impact:

Remote Code Execution via CSRF-Driven Configuration File Overwrite

Severity:

CRITICAL RISK

(9.6)

CVSS Version:

3.1

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CSRF-Induced Configuration Overwrite Leading to RCE (CWE-352) in GetSimple CMS massiveAdmin Plugin

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

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

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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