CVE-2026-9585

High

Description

An unauthenticated reflected cross-site scripting (XSS) vulnerability exists in Sangoma Switchvox SMB Edition version 8.3 (104997). The application fails to properly sanitize the portal parameter supplied to the invalid_browser and invalid_browser_login handlers. User-supplied data is reflected into JavaScript generated by the application, allowing attacker-controlled script execution within a victim's browser.

SeverityHigh

CVSS8.6

Exploit probability—

ProductSwitchvox SMB Edition

PublishedJul 17, 2026

First seenJul 17, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

Sangoma Switchvox SMB Edition8.4.0.2 or later

Vendor advisories

sangomakb.atlassian.net/wiki/spaces/Switchvox/pages/1802371073/Switchvox+-+Release+Notes+Version+8.4.0.2+July+14+2026

Affected products

Product	Affected versions	Fixed in
Sangoma Switchvox SMB Edition	8.3 (104997) ≤ v < 8.4.0.2	8.4.0.2

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