CVE-2026-6404 Anomify AI <= 0.3.6 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'anomify_api_key' Parameter
Authenticated administrators can inject arbitrary scripts via the API key parameter, leading to stored XSS execution on the settings page.
- 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-2026-6404?
CVE-2026-6404 is a medium-severity cross-site scripting vulnerability in simonholliday Anomify AI – Anomaly Detection and Alerting, published on 20 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Anomify AI – Anomaly Detection and Alerting plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'anomify_api_key' parameter in versions up to and including 0.3.6. This is due to insufficient input sanitization and missing output escaping: the plugin applies sanitize_text_field() to the Metric Data Key input before saving it via update_option(), but sanitize_text_field() strips HTML tags without encoding double-quote characters, and the value is then echoed directly into an HTML attribute context (value="...") without esc_attr(). This makes it possible for authenticated attackers with administrator-level access to inject arbitrary web scripts that execute whenever a user visits the plugin's settings page.
Weakness: CWE-79
Which versions are affected by CVE-2026-6404?
How do I fix CVE-2026-6404?
No fix has been published for CVE-2026-6404 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-2026-6404 being exploited?
There is no known exploitation of CVE-2026-6404 in the wild and no public exploit code.
Sources
Also known as GHSA-58gg-mqhx-3cgq.