CVE-2026-9588 | A stored cross-site scripting (XSS) vulnerability exists in … | CVSS 7.0 HIGH

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.

Metadata

CVE ID: CVE-2026-9588
State: PUBLISHED
Assigner: SRA
Reserved: 2026-05-26 13:03 UTC
Published: 2026-07-17 15:59 UTC
Last updated: 2026-07-17 16:42 UTC
Primary CWE: CWE-79
CWE-79 Improper neutralization of input during web page gene…
Vendor / Product: Sangoma / Switchvox SMB Edition
Sources: cve.org · NVD

Severity & Metrics

7.0 HIGH CVSS 4.0

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
Sangoma	Switchvox SMB Edition	—	8.3 (104997) < 8.4.0.2

Weakness (CWE)

CWE	Source	Description
CWE-79	cna	CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.0	HIGH	4.0	cna	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

References (2)