← Back to the live CVE advisory feed

CVE-2026-115806: Prime Mover – Backup and Migration

Severity

9.8 (CRITICAL)

Vendor

CODEXONICS

Affected versions

0 through 2.2.1

Patch status

Unknown

Published

2026-10-24T05:17:04.900

Why it matters

This critical vulnerability allows an unauthenticated attacker to achieve remote code execution on a WordPress site running the Prime Mover plugin (versions up to 2.2.1). The attacker stores a malicious object via a comment, which is triggered when an administrator performs an export or restore, lea

Recommended admin actions

• Identify and immediately disable or uninstall Prime Mover – Backup and Migration plugin versions up to and including 2.2.1.
• If uninstall is not possible, disable comment submission or implement strict comment moderation to prevent attacker payload injection.
• Avoid performing any Prime Mover export or restore operations until a secure version is released and installed.
• Monitor official vendor channels for a security patch and upgrade promptly when available.

Technical summary

The Prime Mover – Backup and Migration plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.2.1 via deserialization of untrusted input in the migration search-and-replace routine (recursiveUnserializeReplace()). An unauthenticated attacker can store a crafted, base64-encoded serialized object in wp_comments.comment_content through the standard comment-submission endpoint (wp-comments-post.php). When an administrator subsequently performs a routine Prime Mover export or restore, the plugin base64-decodes that stored value and passes it to unserialize() with no allowed_classes restriction. A Property-Oriented Programming (POP) chain is present in the plugin's own bundled Freemius library (FS_Clone_Manager::__set → FS_Option_Manager::set_option → store() → update_option()), so no additional plugin or theme is required — the plugin ships the gadget itself.

View the official NVD record for CVE-2026-115806

AI-enriched (HIGH confidence). Validate against the vendor advisory before taking production action.