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CVE-2026-104808— Mitel MiVoice Office 400 stored Cross-Site Scripting

Quick assessment

Affected
Mitel Mitel MiVoice Office 400
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

DigitalCanion 发现了一个存储型跨站脚本（XSS）漏洞，该漏洞允许已认证的恶意用户注入持久的 JavaScript 或 HTML 内容，从而导致 Web 应用程序中的拒绝服务（DoS）状况。 该特定漏洞存在于监听 TCP 443 端口的 Web 门户中，具体位于 “配置” → “用户” → “用户列表” 菜单下。漏洞出现在 “Microsoft Exchange 邮箱” 字段中，该字段在存储和渲染用户提供的输入之前，未能正确验证或清理这些数据。 通过在該字段中注入恶意 JavaScript，攻击者可以使

CVSS 1.9 · Low
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I. Basic Information for CVE-2026-104808

Vulnerability Information
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Vulnerability Title
Mitel MiVoice Office 400 stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mitel Mitel MiVoice Office 400 11.0.96.0 -

II. Public POCs for CVE-2026-104808

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III. Intelligence Information for CVE-2026-104808

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Other References for CVE-2026-104808 (1)

Same Patch Batch · Mitel · 2026-10-05 · 8 CVEs total

CVE-2026-104805 8.5 HIGH Mitel MiVoice Office 400 Backup Restoration Arbitrary File Write Leading to Root Code Exec
CVE-2026-104706 8.4 HIGH Mitel MiVoice Office 400 view system files path traversal
CVE-2026-104810 8.4 HIGH Mitel MiVoice Office 400 File Management File Browser path traversal vulnerability
CVE-2026-104809 8.4 HIGH Mitel MiVoice Office 400 Shared Object Hijacking Leading to Arbitrary Code Execution
CVE-2026-104811 8.4 HIGH Mitel MiVoice Office 400 Music on Hold WAV File Upload Code Execution
CVE-2026-104806 5.5 MEDIUM Mitel MiVoice Office 400 System Logs Path Traversal Information Disclosure
CVE-2026-104807 1.9 LOW Mitel MiVoice Office 400 stored Cross-Site Scripting

IV. Related Vulnerabilities

Same product: Mitel MiVoice Office 400
Same vendor: Mitel
Same weakness: CWE-79

V. Comments for CVE-2026-104808

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