Vulnerability 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
FAQ
What is CVE-2026-16267?
CVE-2026-16267 is a documented vulnerability. 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 arbitrar...
How severe is CVE-2026-16267?
CVSS scoring is not yet available for CVE-2026-16267. Check NVD for updates.
Is there a patch for CVE-2026-16267?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.