Executive brief
The WP Meta Sort Posts plugin for WordPress, which helps manage how posts are displayed, contains a security flaw that allows unauthorized changes to its settings. By tricking a site administrator into clicking a malicious link, an attacker can remotely modify plugin configurations such as navigation locations and file paths. This could disrupt how content is presented to visitors or lead to further site instability.
Technical details
The WP Meta Sort Posts plugin for WordPress is vulnerable to Cross-Site Request Forgery (CSRF) due to missing or incorrect nonce validation on the top-level included script in msp-options.php. This vulnerability affects all versions up to and including 0.9. An unauthenticated attacker can exploit this by crafting a malicious request and using social engineering to induce a site administrator to execute it (e.g., via a phishing link). Successful exploitation allows the attacker to modify the plugin's 'msp_loop_file' and 'msp_nav_location' settings. No patch has been explicitly confirmed in the provided advisory, though the vulnerability is documented for versions <= 0.9.
Affected products
- WordPress Plugin WP Meta Sort Posts up to, and including, 0.9
Timeline
- 2026-06-09: disclosed
- 2026-06-09: advisory
References
- https://plugins.trac.wordpress.org/browser/wp-meta-sort-posts/trunk/msp-options.php
- https://plugins.trac.wordpress.org/browser/wp-meta-sort-posts/trunk/msp-options.php
- https://plugins.trac.wordpress.org/browser/wp-meta-sort-posts/trunk/msp-options.php
- https://plugins.trac.wordpress.org/browser/wp-meta-sort-posts/trunk/wp-meta-sort-posts.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/06efa097-38dc-4499-b163-7a6254b25f72?source=cve