CVE-2026-6404 MEDIUM

CVE-2026-6404: Anomify AI <= 0.3.6 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'anomify_api_key' Parameter

Vendor Simonholliday
Product Anomify AI – Anomaly Detection and Alerting
Weakness CWE-79 · XSS
Published May 20, 2026
Last update May 20, 2026

CVSS base score

4.4/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

Anomify AI versions 0.3.6 and earlier contain a cross-site scripting (XSS) vulnerability in a high-privilege context. An authenticated administrator can inject malicious scripts that execute in other users' browsers when they view affected pages. The vulnerability requires high system access and does not affect data confidentiality or availability directly, but can compromise site integrity and user trust.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers when they visit affected pages.

Potential impact on your site

04Site Impact

A malicious admin can inject scripts affecting other users' sessions and site functionality.

Conditions required to exploit

05Prerequisites

Attacker must have high-level administrative privileges on the system.

Key dates

06Disclosure timeline

May 20, 2026 CVE published
May 20, 2026 Record updated

Related vulnerabilities

08Related CVE