CVE-2024-13866 Simple Notification <= 1.3 - Authenticated (Administrator+) Stored Cross-Site Scripting
Administrators can inject scripts in Simple Notification plugin, affecting multi-site or restricted HTML setups.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-13866?
CVE-2024-13866 is a medium-severity cross-site scripting vulnerability in appsbd Simple Notification, published on 5 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Simple Notification plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 1.3 due to insufficient input sanitization and output escaping. 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. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Weakness: CWE-79
Which versions are affected by CVE-2024-13866?
How do I fix CVE-2024-13866?
No fix has been published for CVE-2024-13866 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-2024-13866 being exploited?
There is no known exploitation of CVE-2024-13866 in the wild and no public exploit code.
Sources
Also known as GHSA-vvj9-853g-mgc8.