CVE-2026-91921: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in 1millionbot AI Chatbot Platform (SaaS) de 1millionbot.
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.
AI Analysis
Technical Summary
This vulnerability arises from improper neutralization of input during web page generation (CWE-79) in the 1millionbot AI Chatbot Platform (SaaS). Specifically, the client-side rendering engine fails to adequately sanitize certain Markdown content, enabling unauthenticated remote attackers to cause external hyperlinks to be rendered in the web interface. The vulnerability affects user sessions only and does not extend to internal infrastructure or third-party data access.
Potential Impact
An attacker can inject external hyperlinks into the chat interface seen by the targeted user, potentially leading to phishing or social engineering risks within that session. However, there is no indication of compromise beyond the affected user's session, no administrative or backend access is impacted, and no internal infrastructure or third-party data is exposed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch information is provided, users should monitor vendor communications for updates. No specific mitigation steps are indicated in the available data.
CVE-2026-91921: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in 1millionbot AI Chatbot Platform (SaaS) de 1millionbot.
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.
CVSS v4.0
Score 5.1medium
Affected software
1millionbot
AI Chatbot Platform (SaaS) de 1millionbot.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper neutralization of input during web page generation (CWE-79) in the 1millionbot AI Chatbot Platform (SaaS). Specifically, the client-side rendering engine fails to adequately sanitize certain Markdown content, enabling unauthenticated remote attackers to cause external hyperlinks to be rendered in the web interface. The vulnerability affects user sessions only and does not extend to internal infrastructure or third-party data access.
Potential Impact
An attacker can inject external hyperlinks into the chat interface seen by the targeted user, potentially leading to phishing or social engineering risks within that session. However, there is no indication of compromise beyond the affected user's session, no administrative or backend access is impacted, and no internal infrastructure or third-party data is exposed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch information is provided, users should monitor vendor communications for updates. No specific mitigation steps are indicated in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- INCIBE
- Date Reserved
- 2026-09-15T10:40:40.901Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab0fd2655bf5e2cf5b1fb3e
Added to database: 09/21/2026, 09:47:18 UTC
Last enriched: 09/21/2026, 10:01:33 UTC
Last updated: 09/21/2026, 19:12:16 UTC
Views: 14
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.