CVE-2026-12583

The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.

Score

CVSS 3.1 8.1 High

Status

Deferred - contact@wpscan.com

Published

2026-07-14

Last modified

2026-07-14

Weaknesses

CWE-502

Affected products

• Newsletters (Unknown)

References

• https://wpscan.com/vulnerability/e4c44105-f43d-4dff-8487-7d8ae2691c4e/