HashBar – Announcement, Notification Bar & Popup Campaign vulnerabilities
Plugin slug hashbar-wp-notification-bar · 4 known vulnerabilities · latest disclosed 2026-09-21 · WordPress.org page
Every listed vulnerability has a fix. Version 2.0.4 or later is not affected by any of them. If your site runs an older version, update it.
0 of 4 rated high or critical (CVSS 7 or more).
Known vulnerabilities in HashBar – Announcement, Notification Bar & Popup Campaign
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 4.9 | <= 2.0.3 | 2.0.4 | CVE-2026-94117 | 2026-09-21 | Advisory |
| Medium 4.3 | <= 2.0.0 | 2.0.1 | CVE-2026-66602 | 2026-08-18 | Advisory |
| Medium 6.4 | < 1.4.2 | 1.4.2 | CVE-2023-51372 | 2023-12-26 | Advisory |
| Medium 6.4 | <= 1.3.5 | 1.3.6 | CVE-2022-4650 | 2022-12-27 | Advisory |
Check if a site is affected
Enter a site address to see which version of HashBar – Announcement, Notification Bar & Popup Campaign and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the HashBar – Announcement, Notification Bar & Popup Campaign plugin safe to use?
All 4 known issues are fixed in current versions (2.0.4 or later). Keeping it updated is what matters.
How do I check which version of HashBar – Announcement, Notification Bar & Popup Campaign my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.