The Prime Mover – Backup and Migration plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2…
CVE-2026-115806 · EUVD-2026-109213 · published 24 Oct 2026
How serious is it
- Severity: critical, CVSS score 9.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-115806?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- codexonics Prime Mover – Backup and Migration: 0 ≤2.2.1
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- www.wordfence.com/threat-intel/vulnerabilities/id/ab6ebd66-c7a4-402e-b51e-3f1f3183bd97?source=cve
- plugins.trac.wordpress.org/browser/prime-mover/tags/2.2.1/utilities/PrimeMoverSearchReplace.php#L1281
- plugins.trac.wordpress.org/browser/prime-mover/tags/2.2.1/utilities/PrimeMoverSearchReplace.php#L391
- plugins.trac.wordpress.org/browser/prime-mover/tags/2.2.1/vendor/freemius/includes/managers/class-fs-clone-manager.php#L1636
- plugins.trac.wordpress.org/browser/prime-mover/tags/2.2.1/vendor/freemius/includes/managers/class-fs-option-manager.php#L414
- plugins.trac.wordpress.org/browser/prime-mover/tags/2.2.1/utilities/PrimeMoverSearchReplace.php#L422
- plugins.trac.wordpress.org/browser/prime-mover/tags/2.2.1/utilities/PrimeMoverSearchReplace.php#L899
Merged from ENISA EUVD. Last updated 24 Oct 2026. All vulnerabilities · RSS · JSON