File Upload Vulnerability in Everest Toolkit Plugin for WordPress
CVE-2026-13158

Currently unrated

Key Information:

Vendor

WordPress
Status
Everest Toolkit
Vendor
CVE Published:
1 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13158?

The Everest Toolkit WordPress plugin, specifically versions up to 1.2.3, suffers from a file upload vulnerability that fails to validate the types of files uploaded during demo-content import. With the WordPress file-type verification disabled, this opens a significant security risk where high-privilege users, including non-super-admin site administrators on multisite installations, can upload potentially harmful executable PHP files to the uploads directory. This situation poses a considerable threat to the site's integrity and overall security.

Affected Version(s)

Everest Toolkit 0 <= 1.2.3

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-2026-13158 - Proof of Concept

References

https://wpscan.com/vulnerability/f101071f-402a-40a2-bbdb-...
exploitvdb-entrytechnical-description

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Huynh Kien Minh
WPScan
.