CVE-2026-16268

HighCVSS 8.2/10Last modified Aug 26, 2026

Description

The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce-processing request before fetching a user-supplied URL on the server side, allowing unauthenticated attackers to make the site issue requests to arbitrary internal or external hosts.

Metrics

CVSS 3.1 8.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Weakness enumeration

CWE-918

Affected software

No affected versions have been published.

Timeline

Published: Aug 6, 2026
Last modified: Aug 26, 2026
NVD status: Deferred

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