Vulnerability · Published Jul 17, 2026 · Assigned by SRA

CVE-2026-9585Unauthenticated Reflected Cross-Site Scripting (XSS) in Switchvox SMB Web Portal

High 8.6

In plain English

A high-severity cross-site scripting in Switchvox SMB Edition from Sangoma. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).

Severity (CVSS 4.0)8.6High

Exploit odds (30 days)0.6%top 53.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Sangoma	Switchvox SMB Edition	8.3 (104997) – before 8.4.0.2

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:L

References

https://sangomakb.atlassian.net/wiki/spaces/Switchvox/pages/1802371073/Switchvox+-+Release+Notes+Version+8.4.0.2+July+14+2026 release-notes
https://labs.sra.io/posts/switchvox/ third-party-advisory