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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-9588
StatePUBLISHED
AssignerSRA
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-17 17:17:18 UTC
Updated2026-07-17 18:04:04 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 7 HIGH from 57dba5dd-1a03-47f6-8b36-e84e47d335d8

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/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

EPSS: 0.002390000 probability, percentile 0.150560000 (date 2026-07-20)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

VersionSourceTypeScoreSeverityVector
4.057dba5dd-1a03-47f6-8b36-e84e47d335d8Secondary7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:H/VA:N/SC:L/SI:L/SA:L/E:X/C...
4.0CNACVSS7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:H/VA:N/SC:L/SI:L/SA:L

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
Passive
Confidentiality
Low
Integrity
High
Availability
None
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
Low

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/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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Sangoma Switchvox SMB Edition affected 8.3 (104997) 8.4.0.2 semver Not specified

References

ReferenceSourceLinkTags
sangomakb.atlassian.net/wiki/spaces/Switchvox/pages/1802371073/Switchvox+-+Release+No... 57dba5dd-1a03-47f6-8b36-e84e47d335d8 sangomakb.atlassian.net
labs.sra.io/posts/switchvox 57dba5dd-1a03-47f6-8b36-e84e47d335d8 labs.sra.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Cam Lischke (SRA) (en)

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