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CVE-2026-9588— Authenticated Stored Cross-Site Scripting (XSS) in Switchvox SMB Web Portal

AI Predicted 5.4 Difficulty: Easy EPSS 0.24% · P15

Affected Version Matrix 1

VendorProductVersion RangeStatus
SangomaSwitchvox SMB Edition8.3 (104997)< 8.4.0.2affected
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I. Basic Information for CVE-2026-9588

Vulnerability Information
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Vulnerability Title
Authenticated Stored Cross-Site Scripting (XSS) in Switchvox SMB Web Portal
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Sangoma Switchvox SMB Edition 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sangoma Switchvox SMB Edition是加拿大Sangoma公司的一款面向中小企业的VoIP通信平台。 Sangoma Switchvox SMB Edition 8.3版本存在跨站脚本漏洞，该漏洞源于submit_modify_voicemail_template端点未能正确处理已认证用户提供的HTML内容，允许通过template_text参数提供的恶意JavaScript存储于服务端并随后呈现给其他用户，容易受到存储型跨站脚本攻击。以下版本受到影响：8.3版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
SangomaSwitchvox SMB Edition 8.3 (104997) ~ 8.4.0.2 -

II. Public POCs for CVE-2026-9588

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III. Intelligence Information for CVE-2026-9588

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Security Blog Posts for CVE-2026-9588 (1)

Vendor Pages for CVE-2026-9588 (1)

Same Patch Batch · Sangoma · 2026-07-17 · 4 CVEs total

CVE-2026-95869.3 CRITICALUnauthenticated SQL Injection Leading to Remote Code Execution in Switchvox SMB
CVE-2026-9585Unauthenticated Reflected Cross-Site Scripting (XSS) in Switchvox SMB Web Portal
CVE-2026-9587Authenticated Local File Inclusion (LFI) in Switchvox SMB Web Portal

IV. Related Vulnerabilities

Same product: Switchvox SMB Edition
Same vendor: Sangoma
Same weakness: CWE-79

V. Comments for CVE-2026-9588

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