CVE-2026-12583

HighCVSS 8.1/10Last modified Jul 14, 2026

Description

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

No affected versions have been published.

Timeline

Published
Jul 14, 2026
Last modified
Jul 14, 2026
NVD status
Deferred

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CVE-2026-12583: High severity, CVSS 8.1 | Vulnix