CVE-2026-19887: Deserialization of Untrusted Data

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...