Backdoor in Link Factory WordPress Plugin Exposes REST API
CVE-2026-15413

10CRITICAL

Key Information:

Vendor

WordPress
Status
Link Factory
Vendor
CVE Published:
13 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-15413?

The Link Factory plugin for WordPress is compromised by a backdoor that enables unauthorized access via an operator-controlled REST API endpoint located at /wp-json/link-factory/v1/. This backdoor is authenticated using a detached Ed25519 signature, which is verified against a hardcoded public key specific to the operator, allowing potential attackers to exploit the plugin. This creates a significant security risk for WordPress sites utilizing this plugin, making them vulnerable to unauthorized operations.

Affected Version(s)

Link Factory 0

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-2026-15413 - Proof of Concept

References

https://wpscan.com/vulnerability/4cad269d-0146-4ca9-a1ae-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Erwan LR (WPScan)
WPScan
.