Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Keszites | Simple Popup Newsletter | <= 1.4.7 |
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/simple-popup-newsletter/trunk/simple-ExploitThird Party Advisory
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34658ExploitThird Party Advisory
- https://plugins.trac.wordpress.org/browser/simple-popup-newsletter/trunk/simple-ExploitThird Party Advisory
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34658ExploitThird Party Advisory
FAQ
What is CVE-2021-34658?
CVE-2021-34658 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 ...
How severe is CVE-2021-34658?
CVE-2021-34658 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-34658?
Check the references section above for vendor advisories and patch information. Affected products include: Keszites Simple Popup Newsletter.