CVE-2026-66639

WordPress WPZOOM Forms – Contact Form plugin for Gutenberg plugin <= 2.0.4 - Cross Site Scripting (XSS) vulnerability

Contributor Cross Site Scripting (XSS) in WPZOOM Forms – Contact Form Plugin for Gutenberg <= 2.0.4 versions.

We have discovered 2,665 live websites that are affected by CVE-2026-66639.

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Affected Software

Product  Wpzoom Forms
Category Wordpress Plugins
Vulnerable Domains2,665 live websites (100% of Wpzoom Forms install base)
Vulnerable Versions
  • from 0 through 2.0.4
Vulnerable Versions Count22 versions ( 100% of all versions)


Common Weakness Enumeration

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



Details

  • Published - Aug 18, 2026
  • Updated - Aug 18, 2026

Credits

  • Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program (finder)

Website Distribution by Country

Number of websites using CVE-2026-66639
United States822 websites


Germany370 websites
France198 websites
Italy136 websites
Netherlands114 websites
GB105 websites
Spain79 websites
Japan69 websites
Denmark61 websites
Switzerland58 websites

Website Distribution by TLD

Number of websites using CVE-2026-66639
.com1,187 websites
.de222 websites
.org149 websites
.fr91 websites
.it88 websites
.nl82 websites
.co.uk64 websites
.net53 websites
.ch47 websites
.at39 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-66639

Top websites that are affected by CVE-2026-66639. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*************.com United States**,***
****.******.com United States**,***
***********.com United States**,***
**********.pub Canada***,***
************.com Israel***,***
***.pt Portugal***,***
*********.com United States***,***
*********.com United States***,***
*********.camp United States***,***
**************.com United States***,***
See full domain list

FAQ

CVE-2026-66639 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Wpzoom Forms
A total of 2,665 websites have been identified as vulnerable to CVE-2026-66639, based on global website indexing conducted by WebTechSurvey.
The Wpzoom Forms is affected by the CVE-2026-66639 vulnerability.
Wpzoom Forms versions up to and including 2.0.4 are vulnerable to CVE-2026-66639.