Filtered by category: WordFence, tag: php object injection × Clear
100,000 WordPress Sites Exposed to Remote Code Execution via PHP Object Injection Vulnerability Found by Wordfence Argus in Tutor LMS
Matched: WordPress
A PHP Object Injection vulnerability (CVE-2026-78175, CVSS 8.8) in the Tutor LMS WordPress plugin affects 100,000+ sites running versions 4.0.7 and earlier. Subscriber-level users can achieve remote code execution by exploiting a serialization length-desync bug caused by misuse of esc_sql(), combined with a GuzzleHttp POP chain. Open registration makes exploitation easy. A patch is available in version 4.0.8, released September 10, 2026.
Wordfence Argus Identifies Two Critical Unauthenticated Vulnerability Chains Leading to Remote Code Execution in The Events Calendar Plugin
Matched: WordPress
Wordfence discovered two critical unauthenticated remote code execution vulnerability chains in The Events Calendar WordPress plugin, active on over 600,000 sites. Both chains exploit the plugin's widget-rendering pipeline, triggered via pending comment previews without moderator approval, requiring only that comments be enabled on event pages. The first uses PHP Object Injection; the second abuses an arbitrary PHP callable to reset an admin password. Users should update to version 6.17.4.1 immediately.