CVE-2025-8147: 
WordPress vulnerability analysis and mitigation

The LWSCache plugin for WordPress contains an unauthorized modification vulnerability (CVE-2025-8147) due to improper authorization in the lwscache_activatePlugin() function in versions up to and including 2.8.5. This security issue was discovered and disclosed on August 29, 2025, affecting WordPress installations using the LWSCache plugin (NVD CVE).

The vulnerability stems from insufficient authorization checks in the lwscache_activatePlugin() function, which allows authenticated users with Subscriber-level access or higher to activate arbitrary whitelisted LWS plugins. The issue has been assigned a CVSS v3.1 base score of 4.3 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N, indicating network accessibility with low attack complexity (NVD CVE).

The vulnerability allows authenticated attackers with Subscriber-level privileges to activate arbitrary whitelisted LWS plugins, potentially leading to unauthorized modifications of the WordPress installation's functionality (NVD CVE).

The vulnerability has been patched in version 2.9 of the LWSCache plugin. Site administrators are advised to update to this version immediately. The fix includes additional authorization checks for AJAX calls to prevent unauthorized plugin activation (WordPress Changeset).