CVE-2026-16267
Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field
HIGH 8.1EPSS 0.5%
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.
- Affected
- Newsletters
- CVSS v3.1 CNA
- 8.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.45% chance of exploitation in the next 30 days, 38th percentile
- Published
- 2026-08-08
- Updated
- 2026-08-11