CVE-2026-66456

WordPress Profile Extra Fields by BestWebSoft plugin <= 1.3.4 - Cross Site Scripting (XSS) vulnerability

Subscriber Cross Site Scripting (XSS) in Profile Extra Fields by BestWebSoft <= 1.3.4 versions.

We have discovered 444 live websites that are affected by CVE-2026-66456.

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Affected Software

Product  Profile Extra Fields
Category Wordpress Plugins
Vulnerable Domains444 live websites (100% of Profile Extra Fields install base)
Vulnerable Versions
  • from 0 through 1.3.4
Vulnerable Versions Count1 versions ( 100% of all versions)


Common Weakness Enumeration

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



Details

  • Published - Aug 13, 2026
  • Updated - Aug 13, 2026

Credits

  • 0xManticore | Patchstack Bug Bounty Program (finder)

Website Distribution by Country

Number of websites using CVE-2026-66456
United States127 websites


France31 websites
GB31 websites
Germany28 websites
Italy25 websites
Switzerland17 websites
Netherlands14 websites
Canada14 websites
Russia13 websites
Australia12 websites

Website Distribution by TLD

Number of websites using CVE-2026-66456
.com153 websites
.org44 websites
.it23 websites
.co.uk17 websites
.ch12 websites
.net12 websites
.de11 websites
.nl11 websites
.ru10 websites
.ca8 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-66456

Top websites that are affected by CVE-2026-66456. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
********.com United States**,***
***********.com Denmark**,***
********************.com United States***,***
*******.**.******.dev United States***,***
**************.com United States***,***
***.**.za South Africa***,***
*****.org GB***,***
*******.org United States***,***
**********.org United States***,***
***.***.uk GB***,***
See full domain list

FAQ

CVE-2026-66456 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Profile Extra Fields
A total of 444 websites have been identified as vulnerable to CVE-2026-66456, based on global website indexing conducted by WebTechSurvey.
The Profile Extra Fields is affected by the CVE-2026-66456 vulnerability.
Profile Extra Fields versions up to and including 1.3.4 are vulnerable to CVE-2026-66456.