CVE-2026-91921
Cross-Site Scripting (XSS) in 1millionbot’s AI chatbot platform
- State
- Published
- Severity
- 5.1 Medium
- Published
- Sep 21, 2026
- Updated
- Sep 21, 2026
- Reserved
- Sep 15, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N | INCIBE |
Weaknesses
- CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
Affected Products
| Product | Versions |
|---|---|
AI Chatbot Platform (SaaS) de 1millionbot.1millionbot |
|
References
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