CVE-2026-9588

Authenticated Stored Cross-Site Scripting (XSS) in Switchvox SMB Web Portal

Published Jul 17, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Sangoma
Sangoma switchvox Smb Edition
Vendors & Products Sangoma
Sangoma switchvox Smb Edition
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Authenticated Stored Cross-Site Scripting (XSS) in Switchvox SMB Web Portal
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:H/VA:N/SC:L/SI:L/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
SRA
Published
Updated
Jul 17, 2026, 4:42 PM
Reserved
May 26, 2026, 1:03 PM
Status
Deferred
Published
Jul 17, 2026, 5:17 PM
Modified
Oct 24, 2026, 8:10 PM