Security Flaw in Hoo Companion WordPress Plugin Exposes Sites to Malicious Scripts
CVE-2026-85129

8.8HIGH

Key Information:

Vendor

WordPress
Status
Hoo Companion
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-85129?

The Hoo Companion plugin for WordPress version 1.0.2 contains a significant security flaw due to the absence of authorization and validation checks in one of its import features. This vulnerability allows unauthenticated attackers to inject arbitrary web scripts, which are then executed for any users visiting the site, including site administrators. Furthermore, this exploit can overwrite existing theme settings, potentially disrupting the site’s functionality. Users should ensure that they update to a secured version to mitigate such risks.

Affected Version(s)

Hoo Companion 1.0.2

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-2026-85129 - Proof of Concept

References

https://wpscan.com/vulnerability/a50f6ec1-4297-453e-b45f-...
exploitvdb-entrytechnical-description

CVSS V3.1

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

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Enrico Marcolini (Dottor Marc)
Claudio Marchesini (Dottor Marc)
WPScan
.