The Speedup Optimization plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 1.5.9. The `speedup01_ajax_enabled()` function, which handles the `wp_ajax_speedup01_enabled` AJAX action, does not perform any capability check via `current_user_can()` and also lacks nonce verification. This is in contrast to other AJAX handlers in the same plugin (e.g., `speedup01_ajax_install_iox` and `speedup01_ajax_delete_cache_file`) which properly check for `install_plugins` and `manage_options` capabilities respectively.
This makes it possible for authenticated attackers, with Subscriber-level access and above, to enable or disable the site's optimization module by sending a POST request to admin-ajax.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://plugins.trac.wordpress.org/browser/speedup-optimization/tags/1.5.9/spee…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/speedup-optimization/tags/1.5.9/spee…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/speedup-optimization/trunk/speedup-o…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/speedup-optimization/trunk/speedup-o…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/3f37c650-af0d-4474-9c…
security@wordfence.com