CVE-2026-1191 JavaScript Notifier <= 1.2.8 - Authenticated (Administrator+) Stored Cross-Site Scripting via Plugin Settings
Administrators can inject arbitrary scripts into WordPress pages via plugin settings, leading to stored XSS attacks against other users.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1191?
CVE-2026-1191 is a medium-severity cross-site scripting vulnerability in freemp JavaScript Notifier, published on 24 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The JavaScript Notifier plugin for WordPress is vulnerable to Stored Cross-Site Scripting via plugin settings in all versions up to, and including, 1.2.8. This is due to insufficient input sanitization and output escaping on user-supplied attributes in the `wp_footer` action. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-1191?
How do I fix CVE-2026-1191?
No fix has been published for CVE-2026-1191 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-1191 being exploited?
There is no known exploitation of CVE-2026-1191 in the wild and no public exploit code.
Sources
Also known as GHSA-3x4x-4626-f4x9.