Security Advisory
CVE-2026-12583
8.1
HIGH
Vulnerability Description
The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.
Published Date
July 14, 2026
Official Source
NIST NVD Advisory