CVE-2026-65437

WordPress Spam protection, AntiSpam, FireWall by CleanTalk plugin <= 6.82 - Cross Site Scripting (XSS) vulnerability

Unauthenticated Cross Site Scripting (XSS) in Spam protection, AntiSpam, FireWall by CleanTalk <= 6.82 versions.

We have discovered 97,736 live websites that are affected by CVE-2026-65437.

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Affected Software

Product  Cleantalk Spam Protect
Category Wordpress Plugins
Vulnerable Domains97,736 live websites (100% of Cleantalk Spam Protect install base)
Vulnerable Versions
  • from 0 through 6.82
Vulnerable Versions Count283 versions ( 100% of all versions)


Common Weakness Enumeration

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')



Details

  • Published - Jul 27, 2026
  • Updated - Jul 28, 2026

Credits

  • daroo | Patchstack Bug Bounty Program (finder)

Website Distribution by Country

Number of websites using CVE-2026-65437
United States48,802 websites


Germany7,564 websites
GB6,269 websites
Netherlands4,912 websites
France3,863 websites
Canada3,210 websites
Australia2,688 websites
Italy2,524 websites
Denmark1,656 websites
Spain1,230 websites

Website Distribution by TLD

Number of websites using CVE-2026-65437
.com53,191 websites
.org4,796 websites
.de4,740 websites
.nl4,508 websites
.co.uk4,329 websites
.com.au2,633 websites
.net2,059 websites
.ca1,885 websites
.it1,775 websites
.fr1,634 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-65437

Top websites that are affected by CVE-2026-65437. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
**********.com United States***
***********.com United States*,***
***********.com United States*,***
****.******.com United States*,***
*************.com United States*,***
************.com Germany*,***
********************.com Thailand**,***
*********.org United States**,***
************.com United States**,***
***************.org United States**,***
See full domain list

FAQ

CVE-2026-65437 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Cleantalk Spam Protect
A total of 97,736 websites have been identified as vulnerable to CVE-2026-65437, based on global website indexing conducted by WebTechSurvey.
The Cleantalk Spam Protect is affected by the CVE-2026-65437 vulnerability.
Cleantalk Spam Protect versions up to and including 6.82 are vulnerable to CVE-2026-65437.