CVE-2026-24399: Chattermate

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Chattermate Chattermate: before 1.0.9 (fixed in 1.0.9)

Published 2026-01-24. Last modified 2026-06-17.