CVE-2026-16267
Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field
- State
- Published
- Severity
- 8.1 High
- Published
- Aug 8, 2026
- Updated
- Aug 11, 2026
- Reserved
- Jul 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
NewslettersUnknown |
|
References
- https://wpscan.com/vulnerability/b51c11d6-5bfa-4b2c-b348-cda19889deee/exploitvdb-entrytechnical-description
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