CVE-2026-4350 | BDVDB-2026-324552 Detail

Description#

The Perfmatters plugin for WordPress is vulnerable to arbitrary file deletion via path traversal in all versions up to, and including, 2.5.9.1. This is due to the `PMCS::action_handler()` method processing the `$_GET['delete']` parameter without any sanitization, authorization check, or nonce verification. The unsanitized filename is concatenated with the storage directory path and passed to `unlink()`. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary files on the server by using `../` path traversal sequences, including `wp-config.php` which would force WordPress into the installation wizard and allow full site takeover.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-04-03Record published in the CVE List.
2. Version 22026-04-08Most recent update recorded in the CVE List.