Description
DigitalCanion has discovered a stored Cross-Site Scripting (XSS) vulnerability that allows an authenticated malicious user to inject persistent JavaScript or HTML content, resulting in a denial-of-service condition within the web application.




The specific flaw exists within the web portal listening on TCP port 443, under Configuration → Users → Users List. The vulnerability occurs in the “Microsoft Exchange mailbox” field, which fails to properly validate or sanitize user-supplied input before storing and rendering it.




By injecting malicious JavaScript into this field, an attacker can cause the payload to execute whenever the affected user properties are accessed. This can prevent access to the affected user properties and result in a denial-of-service condition within the application's user-management functionality.
Published: 2026-10-05
Score: 1.9 Low
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Tue, 06 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Mitel
Mitel mivoice Office 400
Vendors & Products Mitel
Mitel mivoice Office 400

Mon, 05 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 05 Oct 2026 09:00:00 +0000

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, resulting in a denial-of-service condition within the web application. The specific flaw exists within the web portal listening on TCP port 443, under Configuration → Users → Users List. The vulnerability occurs in the “Microsoft Exchange mailbox” field, which fails to properly validate or sanitize user-supplied input before storing and rendering it. By injecting malicious JavaScript into this field, an attacker can cause the payload to execute whenever the affected user properties are accessed. This can prevent access to the affected user properties and result in a denial-of-service condition within the application's user-management functionality.
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'}


Subscriptions

Mitel Mivoice Office 400
cve-icon MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published:

Updated: 2026-10-05T13:08:09.637Z

Reserved: 2026-10-02T13:47:47.692Z

Link: CVE-2026-104808

cve-icon Vulnrichment

Updated: 2026-10-05T13:08:05.569Z

cve-icon NVD

Status : Deferred

Published: 2026-10-05T09:17:09.870

Modified: 2026-10-06T15:18:12.170

Link: CVE-2026-104808

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T20:45:05Z

Weaknesses
  • CWE-79

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