Name: CVE-2026-16267: Deserialization of Untrusted Data
Creator: Rapid7
Published: 2026-08-08T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-16267, CWE-502, CVSS 8.1, EPSS 0.00453

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.

CVSS Details

CVSS 3.1 Base Score: 8.1
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Newsletters Lite Plugin	—	Update newsletters-lite plugin to version 4.16, or a newer patched version	Aug 17, 2026	Aug 3, 2026

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CVSS Details

Covered by Rapid7

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