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CVE-2026-23756— GFI HelpDesk < 4.99.9 Stored XSS via Troubleshooter Step Subject

CVSS 5.4 · Medium EPSS 0.03% · P8
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I. Basic Information for CVE-2026-23756

Vulnerability Information
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Vulnerability Title
GFI HelpDesk < 4.99.9 Stored XSS via Troubleshooter Step Subject
Source: NVD (National Vulnerability Database)
Vulnerability Description
GFI HelpDesk before 4.99.9 contains a stored cross-site scripting vulnerability in the Troubleshooter module where the subject POST parameter is not sanitized in Controller_Step.InsertSubmit() and EditSubmit() before being rendered by View_Step.RenderViewSteps(). An authenticated staff member can inject arbitrary JavaScript into the step subject field, and the payload executes when any user navigates to Troubleshooter > View Troubleshooter and clicks the affected step link.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
GFI HelpDesk 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GFI HelpDesk是美国GFI开源的一个面向企业IT支持流程的服务请求与工单管理系统。 GFI HelpDesk 4.99.9之前版本存在安全漏洞，该漏洞源于故障排除器模块中对subject POST参数清理不足，可能导致经过身份验证的员工在步骤主题字段中注入任意JavaScript，从而在用户导航到Troubleshooter > View Troubleshooter并点击受影响的步骤链接时执行。
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
GFI SoftwareHelpDesk 0 ~ 4.99.9 -

II. Public POCs for CVE-2026-23756

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III. Intelligence Information for CVE-2026-23756

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Same Patch Batch · GFI Software · 2026-04-20 · 5 CVEs total

CVE-2026-237575.4 MEDIUMGFI HelpDesk < 4.99.10 Stored XSS via Reports Module
CVE-2026-237534.8 MEDIUMGFI HelpDesk < 4.99.9 Stored XSS via charset Parameter
CVE-2026-237524.8 MEDIUMGFI HelpDesk < 4.99.9 Stored XSS via companyname Parameter
CVE-2026-23758GFI HelpDesk < 4.99.9 Stored XSS via editsubject Parameter

IV. Related Vulnerabilities

Same product: HelpDesk
Same vendor: GFI Software
Same weakness: CWE-79

V. Comments for CVE-2026-23756

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