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CVE-2026-23758— GFI HelpDesk < 4.99.9 Stored XSS via editsubject Parameter

Quick assessment

Affected
GFI Software HelpDesk
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于工单主题字段中对editsubject POST参数清理不足，可能导致经过身份验证的员工注入恶意JavaScript，从而在其他员工或管理员查看受影响工单时执行任意JavaScript。

AI Predicted 6.1 Difficulty: Easy EPSS 0.15% · P4
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I. Basic Information for CVE-2026-23758

Vulnerability Information
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Vulnerability Title
GFI HelpDesk < 4.99.9 Stored XSS via editsubject Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
GFI HelpDesk before 4.99.9 contains a stored cross-site scripting vulnerability in the ticket subject field that allows authenticated staff members to inject malicious JavaScript by manipulating the editsubject POST parameter. Attackers can inject XSS payloads through inadequate sanitization in Controller_Ticket.EditSubmit() that bypass the incomplete SanitizeForXSS() method to execute arbitrary JavaScript when other staff members or administrators view the affected ticket.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H
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
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，该漏洞源于工单主题字段中对editsubject POST参数清理不足，可能导致经过身份验证的员工注入恶意JavaScript，从而在其他员工或管理员查看受影响工单时执行任意JavaScript。
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

Vendor Product Affected Versions CPE Subscribe
GFI Software HelpDesk 0 ~ 4.99.9 -

II. Public POCs for CVE-2026-23758

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III. Intelligence Information for CVE-2026-23758

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

CVE-2026-23757 5.4 MEDIUM GFI HelpDesk < 4.99.10 Stored XSS via Reports Module
CVE-2026-23756 5.4 MEDIUM GFI HelpDesk < 4.99.9 Stored XSS via Troubleshooter Step Subject
CVE-2026-23753 4.8 MEDIUM GFI HelpDesk < 4.99.9 Stored XSS via charset Parameter
CVE-2026-23752 4.8 MEDIUM GFI HelpDesk < 4.99.9 Stored XSS via companyname Parameter

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-23758

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