What is GHSA-xrh4-q49w-whmw?

GHSA-xrh4-q49w-whmw is a security advisory published by GitHub Security Advisories with High severity. A stored cross-site scripting (XSS) vulnerability exists in Sangoma Switchvox SMB Edition 8.3 ...

Which CVE IDs does GHSA-xrh4-q49w-whmw cover?

GHSA-xrh4-q49w-whmw covers the following CVE IDs: CVE-2026-9588. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-xrh4-q49w-whmwHigh

A stored cross-site scripting (XSS) vulnerability exists in Sangoma Switchvox SMB Edition 8.3 ...

Vendor

GitHub Security Advisories

Published

July 17, 2026

Last Modified

July 17, 2026

🔗 CVE IDs covered (1)

CVE-2026-9588 →

📋 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.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-9588
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+2026
https://github.com/advisories/GHSA-xrh4-q49w-whmw