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CRITICALCVE-2026-24399Published Modified CNA GitHub_M

CVE-2026-24399: ChatterMate has Stored Cross-Site Scripting (XSS) via Chatbot Input Execution

ChatterMate is a no-code AI chatbot agent framework. In versions 1.0.8 and below, the chatbot accepts and executes malicious HTML/JavaScript payloads when supplied as chat input. Specifically, an <iframe> payload containing a javascript: URI can be processed and executed in the browser context. This allows access to sensitive client-side data such as localStorage tokens and cookies, resulting in client-side injection. This issue has been fixed in version 1.0.9.

Metrics

CVSS v3.1
9.3
Severity
CRITICAL
Fixed in
Affected Products
1
Affected packages
  • chattermate / chattermate.chat
    < 1.0.9
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N