CVE-2026-73397

WordPress Youzify plugin <= 1.3.7 - Deserialization of untrusted data vulnerability

Unauthenticated Deserialization of untrusted data in Youzify <= 1.3.7 versions.

We have discovered 203 live websites that are affected by CVE-2026-73397.

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Affected Software

Product  Youzify
Category Wordpress Plugins
Vulnerable Domains203 live websites (33% of Youzify install base)
Vulnerable Versions
  • from 0 through 1.3.7
Vulnerable Versions Count12 versions ( 27% of all versions)


Common Weakness Enumeration

CWE-502 Deserialization of Untrusted Data



Details

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

Credits

  • Peter Thaleikis | Patchstack Bug Bounty Program (finder)

Website Distribution by Country

Number of websites using CVE-2026-73397
United States82 websites


Germany16 websites
GB13 websites
France9 websites
Cyprus9 websites
Italy8 websites
Spain7 websites
Netherlands7 websites
Brazil5 websites
Canada4 websites

Website Distribution by TLD

Number of websites using CVE-2026-73397
.com89 websites
.org33 websites
.fr7 websites
.de7 websites
.nl5 websites
.es4 websites
.it3 websites
.ch2 websites
.co2 websites
.com.br2 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-73397

Top websites that are affected by CVE-2026-73397. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*********.org United States***,***
*****.org United States*,***,***
******.org United States*,***,***
******.com United States*,***,***
*******.com United States*,***,***
*************.com United States*,***,***
**********.fr France*,***,***
*****.com United States*,***,***
*******************.org Cyprus*,***,***
******.com United States*,***,***
See full domain list

FAQ

CVE-2026-73397 is Deserialization of Untrusted Data in Youzify
A total of 203 websites have been identified as vulnerable to CVE-2026-73397, based on global website indexing conducted by WebTechSurvey.
The Youzify is affected by the CVE-2026-73397 vulnerability.
Youzify versions up to and including 1.3.7 are vulnerable to CVE-2026-73397.