CVE-2026-9585Network attack vector

Unauthenticated script execution via unsanitized portal parameter

Published Jul 17, 2026 · Updated Jul 17, 2026

Reflected XSS in Sangoma Switchvox SMB Edition 8.3 (104997) through 8.4.0.1 allows remote attackers to run scripts via a crafted portal parameter. The invalid_browser and invalid_browser_login handlers insert portal input into generated JavaScript without context-appropriate sanitization or encoding. No authentication is required, but a victim must open the crafted URL; the script then runs in the victim's browser within the Switchvox origin.

CVSS severity8.6
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Sangoma Switchvox SMB Edition 8.3 (104997) through 8.4.0.1 allows remote attackers to run scripts via a crafted portal parameter. The invalid_browser and invalid_browser_login handlers insert portal input into generated JavaScript without context-appropriate sanitization or encoding. No authentication is required, but a victim must open the crafted URL; the script then runs in the victim's browser within the Switchvox origin.

The record

CVE
CVE-2026-9585
Published
Jul 17, 2026
Updated
Jul 17, 2026
Vendor
Asterisk
Product
Switchvox SMB
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.3 (104997) <8.4.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Asterisk · Switchvox SMBversion=8.3 (104997) <8.4.0.2

Published CVSS scores

8.6Security Risk AdvisorsCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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