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TI-2026-08424 Aliases CVE-2026-9588GHSA-xrh4-q49w-whmw

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

Priority LOW 31CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00405 34th percentileScored 2026-11-07
Fix Fixed Switchvox SMB Edition (Sangoma): 8.4.0.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SangomaSwitchvox SMB Edition8.3 (104997) to before 8.4.0.28.4.0.2Patch availableCNA
  • Switchvox SMB Edition VendorSangoma Affected 8.3 (104997) to before 8.4.0.2 Fixed in 8.4.0.2 Patch available CNA

Remediation

  • Fix · CNA Switchvox SMB Edition (Sangoma) Fixed in 8.4.0.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Sangoma Switchvox SMB Edition 8.4.0.2

    4 records Highest priority Priority CRITICAL 1 CRITICAL, 1 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-08422 Unauthenticated SQL Injection Leading to Remote Code Execution in Switchvox SMBPriority CRITICAL 99
    • TI-2026-08421 Unauthenticated Reflected Cross-Site Scripting (XSS) in Switchvox SMB Web PortalPriority MEDIUM 40
    • TI-2026-08423 Authenticated Local File Inclusion (LFI) in Switchvox SMB Web PortalPriority LOW 31
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9588
  2. 2026-10-03 Alias added: GHSA-xrh4-q49w-whmw

References

Advisory 1

Other 1

  • TI-2025-35702 FreePBX Affected by Authentication Bypass Leading to SQL Injection and RCE KEVCVSS 4.0CRITICAL 10.0
  • TI-2019-13698 Sangoma FreePBX 115.0.16.26 and below, 14.0.13.11 and below, 13.0.197.13 and below have Incorrect Access Control. KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-08422 Unauthenticated SQL Injection Leading to Remote Code Execution in Switchvox SMB KEVCVSS 4.0CRITICAL 9.3
  • TI-2025-39763 FreePBX Administration GUI is Vulnerable to Authenticated Command Injection KEVCVSS 4.0HIGH 8.6
  • TI-2025-30244 Using malformed From header can forge identity with ";" or NULL in name portion CVSS 3.1HIGH 7.7
  • TI-2024-38391 FreePBX 16 Authenticated Remote Code Execution via API Module CVSS 4.0HIGH 8.7
See all 97 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences