Access Control Issue in CMP – Coming Soon & Maintenance Plugin for WordPress
CVE-2026-13413

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Cmp – Coming Soon & Maintenance
Vendor
CVE Published:
2 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13413?

The CMP – Coming Soon & Maintenance plugin for WordPress prior to version 4.1.20 suffers from an access control vulnerability. When the plugin is activated in maintenance or coming-soon mode, it fails to adequately restrict access to the site. This allows unauthorized users to bypass the intended restrictions, potentially exposing hidden published pages. By manipulating certain requests to resemble login attempts, unauthenticated visitors can gain unauthorized access to content that should remain confidential during maintenance operations.

Affected Version(s)

CMP – Coming Soon & Maintenance 0 < 4.1.20

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-13413 - Proof of Concept

References

https://wpscan.com/vulnerability/706afdef-4935-44d9-ab09-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Meher Sudhakar Abbireddi
WPScan
.