CVE-2026-66602

WordPress HashBar – WordPress Notification Bar plugin <= 2.0.0 - Cross Site Request Forgery (CSRF) vulnerability

Cross-Site Request Forgery (CSRF) vulnerability in DevItems HashBar – WordPress Notification Bar allows Cross Site Request Forgery. This issue affects HashBar – WordPress Notification Bar: from n/a through 2.0.0.

We have discovered 2,277 live websites that are affected by CVE-2026-66602.

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Affected Software

Product  Hashbar Wp Notification Bar
Category Wordpress Plugins
Vulnerable Domains2,277 live websites (100% of Hashbar Wp Notification Bar install base)
Vulnerable Versions
  • from 0 through 2
Vulnerable Versions Count44 versions ( 98% of all versions)


Common Weakness Enumeration

CWE-352 Cross-Site Request Forgery (CSRF)



Details

  • Published - Aug 18, 2026
  • Updated - Aug 19, 2026

Credits

  • Brian Willows | Patchstack Bug Bounty Program (finder)

Website Distribution by Country

Number of websites using CVE-2026-66602
United States824 websites


Germany180 websites
Netherlands126 websites
GB105 websites
France99 websites
Canada86 websites
Greece66 websites
Italy62 websites
Poland50 websites
Russia46 websites

Website Distribution by TLD

Number of websites using CVE-2026-66602
.com871 websites
.org197 websites
.nl122 websites
.de104 websites
.co.uk78 websites
.ca55 websites
.com.au49 websites
.it49 websites
.ru45 websites
.fr42 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-66602

Top websites that are affected by CVE-2026-66602. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*********.com United States*,***
***********.com United States**,***
***********.com United States**,***
***********.com United States**,***
****************************.org United States**,***
**************.***.uk GB***,***
**************.com United States***,***
****************.org United States***,***
*******.org United States***,***
***********.de Germany***,***
See full domain list

FAQ

CVE-2026-66602 is Cross-Site Request Forgery (CSRF) in Hashbar Wp Notification Bar
A total of 2,277 websites have been identified as vulnerable to CVE-2026-66602, based on global website indexing conducted by WebTechSurvey.
The Hashbar Wp Notification Bar is affected by the CVE-2026-66602 vulnerability.
Hashbar Wp Notification Bar versions up to and including 2 are vulnerable to CVE-2026-66602.