PT-2026-69168 · WordPress · Newsletters
CVE-2026-16267
·
Published
2026-08-08
·
Updated
2026-08-11
CVSS v3.1
8.1
High
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Newsletters WordPress plugin versions prior to 4.16
Description
An issue exists where the software fails to restrict the classes allowed during the unserialization of values received from public form submissions. This allows unauthenticated attackers to perform PHP Object Injection, a technique where malicious objects are injected into the application to manipulate its logic or execute unauthorized code.
Recommendations
Update the Newsletters WordPress plugin to version 4.16 or later.
Exploit
Fix
Deserialization of Untrusted Data
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Weakness Enumeration
Related Identifiers
Affected Products
Newsletters