Vulnerability Intelligence Report
Authenticated Stored Cross-Site Scripting (XSS) in Switchvox SMB Web Portal
CVE-2026-9588
A stored cross-site scripting (XSS) vulnerability exists in Sangoma Switchvox SMB Edition 8.3 (104997) within the voicemail notification template functionality. The submit_modify_voicemail_template endpoint fails to properly sanitize HTML content supplied by authenticated users, allowing malicious JavaScript supplied through the template_text parameter to be stored server-side and subsequently rendered to other users.
Cross-Site Scripting (XSS)
No Active Exploit Signals
CVSS Base Score
7.0
HIGH
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-79 ↗CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Sangoma | Switchvox SMB Edition | 8.3 (104997) < 8.4.0.2 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Vulnerability Class
Cross-Site Scripting (XSS)
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Security Risk Advisors (SRA) · Researcher · USA |
| Reserved | 2026-05-26T13:03:32 |
| Published | 2026-07-17T15:59:23 |
| Last Updated | 2026-07-17T16:42:08 |
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