Stored Cross-Site Scripting Vulnerability in Sangoma Switchvox SMB Edition
CVE-2026-9588

7HIGH

Key Information:

Vendor

Sangoma

Status
Switchvox Smb Edition
Vendor
CVE Published:
17 July 2026

What is CVE-2026-9588?

A stored cross-site scripting (XSS) vulnerability has been identified in Sangoma Switchvox SMB Edition 8.3. This vulnerability occurs within the voicemail notification template functionality, specifically affecting the submit_modify_voicemail_template endpoint. The lack of proper HTML content sanitization allows authenticated users to inject malicious JavaScript via the template_text parameter. This injected script can then be stored on the server and rendered to unsuspecting users, potentially leading to unauthorized actions and data exposure.

Affected Version(s)

Switchvox SMB Edition 8.3 (104997) < 8.4.0.2

References

https://sangomakb.atlassian.net/wiki/spaces/Switchvox/pag...
release-notes
https://labs.sra.io/posts/switchvox/
third-party-advisory

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Cam Lischke (SRA)
.