CVE-2026-73381

WordPress Popup by Supsystic plugin <= 1.13.0 - Broken Authentication vulnerability

Unauthenticated Broken Authentication in Popup by Supsystic <= 1.13.0 versions.

We have discovered 1,837 live websites that are affected by CVE-2026-73381.

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Affected Software

Product  Popup By Supsystic
Category Wordpress Plugins
Vulnerable Domains1,837 live websites (100% of Popup By Supsystic install base)
Vulnerable Versions
  • from 0 through 1.13
Vulnerable Versions Count80 versions ( 100% of all versions)


Common Weakness Enumeration

CWE-288 Authentication Bypass Using an Alternate Path or Channel



Details

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

Credits

  • Asim Alshaya | Patchstack Bug Bounty Program (finder)

Website Distribution by Country

Number of websites using CVE-2026-73381
United States698 websites


Germany149 websites
Cyprus96 websites
France94 websites
Italy65 websites
Spain64 websites
Russia61 websites
GB57 websites
Poland50 websites
Netherlands41 websites

Website Distribution by TLD

Number of websites using CVE-2026-73381
.com871 websites
.org178 websites
.de74 websites
.it47 websites
.ru46 websites
.net44 websites
.pl39 websites
.nl36 websites
.co.uk36 websites
.com.au32 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-73381

Top websites that are affected by CVE-2026-73381. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*********.com United States**,***
**********.org United States**,***
******.com United States***,***
***************.org United States***,***
*****************.com Germany***,***
**************.com United States***,***
***.*********.com United States***,***
****************.com Singapore***,***
********.org United States***,***
***************.com Spain***,***
See full domain list

FAQ

CVE-2026-73381 is Authentication Bypass Using an Alternate Path or Channel in Popup By Supsystic
A total of 1,837 websites have been identified as vulnerable to CVE-2026-73381, based on global website indexing conducted by WebTechSurvey.
The Popup By Supsystic is affected by the CVE-2026-73381 vulnerability.
Popup By Supsystic versions up to and including 1.13 are vulnerable to CVE-2026-73381.