CVE-2026-12583 — Newsletters < 4.15 - Unauthenticated PHP Object Injection via Subscriber Custom Field
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 inje…
Published: 2026-07-14 · CVSS: 8.1 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7