EUVD-2026-80000

Cotonti 1.0.0 Comments plugin passes the ci GET parameter to unserialize without allowedclasses restriction, allowing unauthenticated attackers to instantiate arbitrary PHP classes with attacker-controlled properties. Attackers can exploit PHP object injection through crafted serialized payloads ...

CVE-2026-91939

Cotonti 1.0.0 Comments plugin passes the ci GET parameter directly to unserialize() without an allowed_classes restriction. This allows unauthenticated attackers to inject arbitrary PHP objects via crafted serialized payloads, triggering gadget chains that can lead to database manipulation or rem...

CVE-2026-91939 Cotonti 1.0.0 Comments Plugin PHP Object Injection via ci Parameter

Cotonti 1.0.0 Comments plugin passes the ci GET parameter to unserialize without allowedclasses restriction, allowing unauthenticated attackers to instantiate arbitrary PHP classes with attacker-controlled properties. Attackers can exploit PHP object injection through crafted serialized payloads ...

PT-2026-93177

Cotonti 1.0.0 Comments plugin passes the ci GET parameter to unserialize without allowed classes restriction, allowing unauthenticated attackers to instantiate arbitrary PHP classes with attacker-controlled properties. Attackers can exploit PHP object injection through crafted serialized payloads...

CVE-2026-91939: Deserialization of Untrusted Data

Cotonti 1.0.0 Comments plugin passes the ci GET parameter to unserialize without allowedclasses restriction, allowing unauthenticated attackers to instantiate arbitrary PHP classes with attacker-controlled properties. Attackers can exploit PHP object injection through crafted serialized payloads ...

CVE-2026-49400

October System provides the system module for October Content Management System. Prior to versions 3.7.17 and 4.2.21, the backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could...

CVE-2026-49400

October CMS (System module) prior to v3.7.17 and v4.2.21 is affected by a PHP object injection vulnerability in the backend SessionMaker trait, which stored widget session state as base64(serialize(...)) and deserialized it with unserialize() without an allowed_classes restriction. Exploitation r...

CVE-2026-49400 October CMS: PHP Object Injection via Backend Widget Session Storage

October System provides the system module for October Content Management System. Prior to versions 3.7.17 and 4.2.21, the backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could...

EUVD-2026-77682

October System provides the system module for October Content Management System. Prior to versions 3.7.17 and 4.2.21, the backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could...

October CMS: PHP Object Injection via Backend Widget Session Storage

The backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could write to a widget. session key with attacker-controlled bytes could trigger PHP object injection the next time the widg...

GHSA-2FF2-MX52-Q8WP October CMS: PHP Object Injection via Backend Widget Session Storage

The backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could write to a widget. session key with attacker-controlled bytes could trigger PHP object injection the next time the widg...

Wordfence Argus Identifies Two Critical Unauthenticated Vulnerability Chains Leading to Remote Code Execution in The Events Calendar Plugin

On August 21 and August 22, 2026, Wordfence Argus, created by the Wordfence Threat Intelligence team, identified two independent critical vulnerability chains in The Events Calendar, a WordPress plugin active on more than 600,000 websites. Both chains begin in the plugin's widget-rendering pipeli...

WordPress wpstorecart plugin <= 5.0.7 - Unauthenticated PHP Object Injection vulnerability

Unauthenticated PHP Object Injection vulnerability discovered by reconnaissance in WordPress Plugin WPStoreCart versions = 5.0.7...

PT-2026-91835

The backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowed classes restriction. Any code path that could write to a widget. session key with attacker-controlled bytes could trigger PHP object injection the next time the...

CVE-2026-49400: Deserialization of Untrusted Data

October System provides the system module for October Content Management System. Prior to versions 3.7.17 and 4.2.21, the backend SessionMaker trait stored widget session state as base64serialize... and consumed it with unserialize without an allowedclasses restriction. Any code path that could...

CVE-2026-82222-PoC

CVE-2026-82222 — GiveWP Unauthenticated PHP Object Injection → RCE Lab + proof-of-concept for CVE-2026-82222 : unauthenticated PHP object injection leading to remote code execution in the GiveWP WordPress donation plugin = 4.16.7.1 patched in 4.16.7.2...

Exploit for CVE-2026-71294

Cotonti CommentsWidget PHP Object Injection PoC Safe local pr...

PT-2026-91278

Name of the Vulnerable Software and Affected Versions October CMS versions prior to 3.7.17 October CMS versions prior to 4.2.21 Description The backend SessionMaker trait stores widget session state using base64serialize... and processes it with the unserialize function without an allowed classes...

Exploit for CVE-2026-78006

CVE-2026-78006-POC POC for CVE-2026-78006 The Events Calendar...

CVE-2026-78175

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.0.7 via the withdrawmethodfield parameter of the tutorsavewithdrawaccount AJAX handler. This is due to the handler lacking any capability or role...