Admin Columns, CVE-2026-7654

CVE, Research URL: CVE-2026-7654
Home page URL: Security reports for Admin Columns
Application: Admin Columns
Published on: Jun 06, 2026
Research Description: The Admin Columns plugin for WordPress is vulnerable to PHP Object Injection leading to Remote Code Execution in versions up to and including 7.0.18. This is due to the use of `unserialize()` without an `allowed_classes` restriction in the `IdsToCollection::get_ids_from_string()` function, which processes attacker-controlled post meta values without proper validation. This makes it possible for authenticated attackers with Contributor-level access and above to inject a serialized PHP object into a post's custom meta field and trigger arbitrary code execution by exploiting a bundled POP gadget chain, resulting in remote code execution as the web server user.
Affected versions: max 7.0.19.
Status: vulnerable