CVE-2026-115806 The Prime Mover – Backup and Migration plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.2.
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-115806?
CVE-2026-115806 is a critical vulnerability in codexonics Prime Mover – Backup and Migration, published on 24 Oct 2026.
Official description
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.
Weakness: CWE-502
Which versions are affected by CVE-2026-115806?
How do I fix CVE-2026-115806?
No fix has been published for CVE-2026-115806 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-115806 being exploited?
There is no known exploitation of CVE-2026-115806 in the wild and no public exploit code.
Sources
Also known as GHSA-g589-p4qg-x28q.