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Vulnerability record · CVE-2026-9585 · published 17 July 2026

CVE-2026-9585: Cross-site scripting vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.55% · top 56.0% CWE-79 · Cross-site scripting Deferred
8.6CVSS 4.0 base score
0.55%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jul 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://labs.sra.io/posts/switchvox/
https://sangomakb.atlassian.net/wiki/spaces/Switchvox/pages/1802371073/Switchvox+-+Release+Notes+Version+8.4.0.2+July+14

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Source: NIST National Vulnerability Database (record CVE-2026-9585), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.