CVE-2026-66602 WordPress HashBar – WordPress Notification Bar plugin <= 2.0.0 - Cross Site Request Forgery (CSRF) vulnerability
Attackers can trick authenticated users into performing unintended actions in the HashBar WordPress Notification Bar plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-66602?
CVE-2026-66602 is a high-severity vulnerability in DevItems HashBar – WordPress Notification Bar, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-352
Which versions are affected by CVE-2026-66602?
How do I fix CVE-2026-66602?
No fix has been published for CVE-2026-66602 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-66602 being exploited?
There is no known exploitation of CVE-2026-66602 in the wild and no public exploit code.
Sources
Also known as GHSA-g9fq-59hq-pppw.