CVE-2026-16267 — Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field
The Newsletters WordPress plugin before 4.16 does not restrict the classes allowed when unserialising a value taken from a public form submission, allowing unauthenticated attac…
Published: 2026-08-08 · CVSS: 8.1 · CVSS 3.1
The Newsletters WordPress plugin before 4.16 does not restrict the classes allowed when unserialising a value taken from a public form submission, allowing unauthenticated attackers to inject arbitrary PHP objects.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7