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.
Published: 2026-09-21
Score: 5.1 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

The vulnerability has been fixed by the 1millionbot team.

Tracking

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Advisories

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History

Mon, 21 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 21 Sep 2026 10:00:00 +0000

Type Values Removed Values Added
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.
Title Cross-Site Scripting (XSS) in 1millionbot’s AI chatbot platform
First Time appeared 1millionbot
1millionbot ai Chatbot Platform Saas De 1millionbot.
Weaknesses CWE-79
CPEs cpe:2.3:a:1millionbot:ai_chatbot_platform_saas_de_1millionbot.:version_prior_to_cve_publication:*:*:*:*:*:*:*
Vendors & Products 1millionbot
1millionbot ai Chatbot Platform Saas De 1millionbot.
References
Metrics cvssV4_0

{'score': 5.1, 'vector': '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'}


Subscriptions

1millionbot Ai Chatbot Platform Saas De 1millionbot.
cve-icon MITRE

Status: PUBLISHED

Assigner: INCIBE

Published:

Updated: 2026-09-21T11:12:43.964Z

Reserved: 2026-09-15T10:40:40.901Z

Link: CVE-2026-91921

cve-icon Vulnrichment

Updated: 2026-09-21T11:12:39.527Z

cve-icon NVD

Status : Received

Published: 2026-09-21T10:17:15.873

Modified: 2026-09-21T12:17:25.223

Link: CVE-2026-91921

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-21T11:30:09Z

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')