CVE-2021-25033: Noptin

Medium severity, CVSS 6.1. EPSS: 2.3% chance of exploitation in the next 30 days.

The WordPress Newsletter Plugin WordPress plugin before 1.6.5 does not validate the to parameter before redirecting the user to its given value, leading to an open redirect issue

Affected products

• Noptin Noptin: before 1.6.5 (fixed in 1.6.5)

Published 2022-02-14. Last modified 2026-06-17.