Cross-Site Scripting (XSS) in 1millionbot’s AI chatbot platform
1millionbot's AI Chatbot Platform (SaaS).
INCIBE has coordinated the disclosure of a low-severity vulnerability affecting 1millionbot’s AI Chatbot Platform (SaaS), a technology solution that enables the creation and deployment of conversational virtual assistants and autonomous agents for businesses and public administrations. The vulnerability was discovered by Alejandro González Martínez.
This vulnerability has been assigned the following code, CVSS v4.0 base score, CVSS vector and CWE vulnerability type:
- CVE-2026-91921: CVSS v4.0: 5.1 | CVSS AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N | CWE-79
The vulnerability has been fixed by the 1millionbot team.
CVE-2026-91921: 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.
| Identificador CVE | Severidad | Explotación | Fabricante |
|---|---|---|---|
| CVE-2026-91921 | Media | No | 1millionbot |
