Detections
Analytics
CVE-2026-16267
critical
Description
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.
References
https://wpscan.com/vulnerability/b51c11d6-5bfa-4b2c-b348-cda19889deee/