High severity · published Aug 18, 2026
CVE-2026-66602
WordPress HashBar – WordPress Notification Bar plugin <= 2.0.0 - Cross Site Request Forgery (CSRF) vulnerability
8.8
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HW
HashBar – WordPress Notification Bar · DevItems
through 2.0.0 · source: vendor
Affected product
HW
HashBar – WordPress Notification Bar
DevItems
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-66602
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-66602
patchstack.com
https://patchstack.com/database/wordpress/plugin/hashbar-wp-notification-bar/vulnerability/wordpress-hashbar-wordpress-notification-bar-plugin-2-0-0-cross-site-request-forgery-csrf-vulnerability?_s_id=cve
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