CVE-2026-16268

high

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.

References

https://wpscan.com/vulnerability/65612dd4-83d8-40c5-8e12-862e9b5f940b/

Details

Source: Mitre, NVD

Published: 2026-08-06

Updated: 2026-08-06

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.2

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