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.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mitel | Mitel MiVoice Office 400 | unknown |
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No data available yet.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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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 |
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| Metrics |
cvssV4_0
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Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: NCSC.ch
Published:
Updated: 2026-10-05T08:30:54.909Z
Reserved: 2026-10-02T13:47:47.692Z
Link: CVE-2026-104808
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-05T09:17:09.870
Modified: 2026-10-05T09:17:09.870
Link: CVE-2026-104808
Redhat
No data.
OpenCVE Enrichment
No data.
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CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')