CVE-2026-104807

Mitel MiVoice Office 400 stored Cross-Site Scripting

Published Oct 5, 2026 CVSS 4.0 · 1.9 Low EPSS < 1% KEV · Not listed
Description
DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTML content into the web application.




The specific flaw exists within the web portal listening on TCP port 443, under Configuration → Domains, specifically in the “Description” field. The application fails to properly validate or sanitize user-supplied input before storing and subsequently rendering the field.




By injecting malicious JavaScript into the Description field, an attacker can modify the content and behavior of the affected page when it is viewed by other users. This could allow an attacker to alter the page's appearance, display attacker-controlled content, or construct convincing phishing scenarios within the application's trusted web context.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mitel
Mitel mivoice Office 400
Vendors & Products Mitel
Mitel mivoice Office 400
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTML content into the web application. The specific flaw exists within the web portal listening on TCP port 443, under Configuration → Domains, specifically in the “Description” field. The application fails to properly validate or sanitize user-supplied input before storing and subsequently rendering the field. By injecting malicious JavaScript into the Description field, an attacker can modify the content and behavior of the affected page when it is viewed by other users. This could allow an attacker to alter the page's appearance, display attacker-controlled content, or construct convincing phishing scenarios within the application's trusted web context.
Title Mitel MiVoice Office 400 stored Cross-Site Scripting
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 1.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/AU:Y/R:A/V:D/RE:L/U:Amber'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
NCSC.ch
Published
Updated
Oct 5, 2026, 1:11 PM
Reserved
Oct 2, 2026, 1:47 PM
Status
Deferred
Published
Oct 5, 2026, 9:17 AM
Modified
Oct 6, 2026, 3:18 PM