CVE-2026-2500

Description

The Quick Playground plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.3.4. This is due to the `qckply_data()` function passing the user-supplied `filename` POST parameter directly to `file_get_contents()` without any validation, sanitization, or path restriction. This makes it possible for authenticated attackers, with Administrator-level access and above, to read arbitrary files on the server, such as `wp-config.php` or `/etc/passwd`, which can contain sensitive information. Note: This vulnerability is only exploitable when the site has been synced with WordPress Playground (the `is_qckply_clone` option is set) or when running on `playground.wordpress.net`.

References

• https://plugins.trac.wordpress.org/browser/quick-playground/tags/1.2/client-qckply_data.php#L10
• https://plugins.trac.wordpress.org/browser/quick-playground/trunk/client-qckply_data.php#L10
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3558027%40quick-playground&new=3558027%40quick-playground&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/a920d8c0-fb6b-40dc-ae61-ac004b0dfccd?source=cve