CVE-2026-19887 Welcart e-Commerce <= 2.12.1 - Unauthenticated Arbitrary File Deletion via PHP Object Injection via 'reserve' Checkout Parameter and 'option' EDY Callback

The Welcart e-Commerce plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.12.1 via deserialization of untrusted input in the Telecom EDY payment callback uscesactionactingtransaction. Unauthenticated attackers can store arbitrary 'reserve' key/value...