CVE-2026-91921: Cross-Site Scripting (XSS) in 1millionbot’s AI chatbot platform
Cross-Site Scripting (XSS) vulnerability due to inadequate input sanitisation in the client-side rendering engine of the 1millionbot AI Chat Platform. An unauthenticated remote user could cause external hyperlinks to be rendered in the web interface by sending messages containing Markdown syntax and certain unsanitised content blocks. The impact is limited to the user’s own interactive session; no compromise of internal infrastructure, access to third-party data or impact on administrative panels has been identified.
Affected Software
Event History
Frequently Asked Questions
Can this be used to access administrative panels, internal systems, or other users’ data?
No such impact has been identified. The reported impact is limited to the affected user’s own interactive session, with no identified compromise of internal infrastructure, third-party data, or administrative panels.
Does exploitation require an authenticated account?
No. The vulnerability can be triggered by an unauthenticated remote user sending messages that contain Markdown syntax and certain unsanitised content blocks.