CVE-2021-25033: 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

medium Affects noptin (WordPress plugin). Feed 2026.10.29.4, updated 2026-10-29; published 2022-02-14; advisory modified 2026-06-17.

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

Package: noptin (WordPress plugin) WordPress
Affected versions: <1.6.5
Fixed in: 1.6.5
Severity: medium CVSS 6.1
Exploitation: not on CISA KEV · EPSS 2% (83.3th percentile)
Published: 2022-02-14
Source: nvd

References

CWE-601

NVD record noptin (WordPress plugin) advisories

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# then
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