CVE-2026-66602
8.8DevItems · HashBar – WordPress Notification Bar
The HashBar WordPress plugin contains a Cross-Site Request Forgery (CSRF) vulnerability, which may allow unauthorized actions to be performed on behalf of an authenticated user.
Executive summary
A high-severity Cross-Site Request Forgery (CSRF) vulnerability in the DevItems HashBar WordPress plugin may allow attackers to perform unauthorized administrative actions.
Vulnerability
This is a Cross-Site Request Forgery (CWE-352) vulnerability. The flaw does not require authentication from the attacker, but it does require the victim to be authenticated and interact with a malicious link or site.
Business impact
A successful CSRF attack could lead to unauthorized changes to the WordPress notification settings or other administrative configurations, potentially resulting in site defacement or the injection of malicious content. With a CVSS score of 8.8, the potential for high impact on system integrity and availability makes this a priority for remediation.
Remediation
Immediate Action: Update the HashBar WordPress plugin to version 2.0.1 or later immediately.
Proactive Monitoring: Review WordPress administrative logs for unauthorized plugin configuration changes or unexpected notification bar updates.
Compensating Controls: Ensure administrative users are not logged into the WordPress dashboard while browsing untrusted sites to minimize the risk of CSRF exploitation.
Exploitation status
Public Exploit Available: Unknown
Analyst recommendation
Given the ease of exploitation inherent in CSRF flaws, administrators should update the plugin immediately. If the plugin is no longer required for site operations, it should be removed entirely to eliminate the attack surface.