CVE-2026-9585

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

At a glance

Severity: HIGH 8.6
EPSS: EPSS 0.55 % · percentile 46 (2026-10-27)
State: PUBLISHED
Published: 2026-07-17
Updated: 2026-07-17
Assigner: SRA
NVD status: Deferred

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.

Scores

Version	Score	Vector	Scored by
CVSS 4.0	HIGH 8.6	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	SRA
CVSS 4.0	HIGH 8.6	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:X/V:X/RE:X/U:X	NVD · 57dba5dd-1a03-47f6-8b36-e84e47d335d8 (Secondary)

Weaknesses (CWE)

CWE-79

European references

ENISA EUVD · EUVD-2026-45203
GCVE · GCVE-0-2026-9585

Affected products

Product	Versions
Sangoma · Switchvox SMB Edition	affected 8.3 (104997) < 8.4.0.2

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD