CVE-2026-16066

Welcart e-Commerce < 2.11.34 - Author+ Stored XSS via Product Name

The Welcart e-Commerce WordPress plugin before 2.11.34 does not sanitise or escape a product field before outputting it on the product pages, allowing users with the Author role and above to inject arbitrary web scripts that execute in the browser of any visitor viewing the product page.

We have discovered 6,367 live websites that are affected by CVE-2026-16066.

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Affected Software

Product  Welcart
Category Ecommerce
Vulnerable Domains6,367 live websites (100% of Welcart install base)
Vulnerable Versions
  • from 0 through 2.11.34
Vulnerable Versions Count192 versions ( 100% of all versions)


Common Weakness Enumeration

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



Details

  • Published - Aug 12, 2026
  • Updated - Aug 12, 2026

Credits

  • Yaswanth Reddy Sunkara (finder)
  • WPScan (coordinator)

Website Distribution by Country

Number of websites using CVE-2026-16066
United States135 websites


Japan5,898 websites
GB6 websites
China5 websites
Canada3 websites
Spain3 websites
Australia2 websites
Germany2 websites
Italy2 websites

Website Distribution by TLD

Number of websites using CVE-2026-16066
.com3,251 websites
.jp1,355 websites
.co.jp827 websites
.net465 websites
.info73 websites
.org68 websites
.co5 websites
.it3 websites
.be2 websites
.com.au2 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-16066

Top websites that are affected by CVE-2026-16066. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*******.jp Japan**,***
*******.com United States**,***
*********.com ***,***
********.net Japan***,***
************.com ***,***
*****.**.jp Japan***,***
*****************.com Japan***,***
*********.jp Japan***,***
************.**.jp Japan***,***
******.**.jp Japan***,***
See full domain list

FAQ

CVE-2026-16066 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Welcart
A total of 6,367 websites have been identified as vulnerable to CVE-2026-16066, based on global website indexing conducted by WebTechSurvey.
The Welcart is affected by the CVE-2026-16066 vulnerability.
Welcart versions up to 2.11.34 are vulnerable to CVE-2026-16066.
CVE-2026-16066 is resolved in version 2.11.34 of Welcart.