HashBar – Announcement, Notification Bar & Popup Campaign

hashbar-wp-notification-bar · plugin

Known security vulnerabilities for HashBar – Announcement, Notification Bar & Popup Campaign. Find out in seconds which version runs on your site with WP Lens.

3 known vulnerabilities

1 exploitable without logging in · latest Sep 22, 2026

Listed on wordpress.org · latest 2.0.4 · last updated Sep 21, 2026 · 9K+ installs

wordpress.org status checked on Oct 2, 2026

Vulnerabilities

CVE-2026-66602unauthenticated · needs a click≤ 2.0.0
WordPress HashBar – WordPress Notification Bar plugin <= 2.0.0 - Cross Site Request Forgery (CSRF) vulnerability
High 8.8
CVE-2026-94117high privilege≤ 2.0.3
WordPress HashBar – WordPress Notification Bar plugin <= 2.0.3 - SQL Injection vulnerability
High 7.6
CVE-2023-51372high privilege≤ 1.4.1
WordPress HashBar – WordPress Notification Bar Plugin <= 1.4.1 is vulnerable to Cross Site Scripting (XSS)
Medium 4.8

The access label is read from the record's own text (e.g. “subscriber+”: subscriber and above). When the text names no role, CVSS decides between “login required” and “high privilege”; no role name is invented. “Needs a click”: the attack depends on a logged-in user following a link (CSRF, reflected XSS).

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