CVE-2026-104808

Mitel MiVoice Office 400 stored Cross-Site Scripting

State
Published
Severity
1.9 Low
Published
Oct 5, 2026
Updated
Oct 5, 2026
Reserved
Oct 2, 2026

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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.

Scores

CVSSScoreVectorSource
4.01.9 LowCVSS: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:AmberNCSC.ch

Weaknesses

  • CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

Affected Products

ProductVersions
Mitel MiVoice Office 400Mitel
  • 11.0.96.0Affected

References

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