cvedb.io
CVE-2021-34658
MEDIUM · CVSS 6.1
EPSS exploitation probability: 0%
Published 2021-08-16T19:15:15.227 · Last modified 2026-06-17T03:56:19.210

Summary

The Simple Popup Newsletter WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of $_SERVER['PHP_SELF'] in the ~/simple-popup-newsletter.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.4.7.

Affected products

keszites — simple_popup_newsletter

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.