CVE-2021-25033

MEDIUM 6.1CVE-2021-25033 · Published 14/02/2022 · updated 17/06/2026

In short

CVE-2021-25033 is a MEDIUM (CVSS 6.1) vulnerability affecting noptin (noptin).
Chance of exploitation in the next 30 days (EPSS): 2.3%, higher than 83.4% of all vulnerabilities.
Fix: update to 1.6.5 or later.

Package	Affected versions	Patched versions
noptin noptin	`< 1.6.5`	`1.6.5`

Description

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

References

plugins.trac.wordpress.org/changeset/2639592 · Patch
wpscan.com/vulnerability/c2d2384c-41b9-4aaf-b918-c1cfda58af5c · Exploit

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