CVE-2026-23756

| EUVD-2026-23908 MEDIUM
GFI HelpDesk – Cross-site Scripting (XSS) (CWE-79)
2026-04-20 VulnCheck
XSS
5.1
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

2
Analysis Generated
Apr 20, 2026 - 18:28 vuln.today
CVSS changed
Apr 20, 2026 - 18:22 NVD
5.4 (MEDIUM) 5.1 (MEDIUM)

DescriptionNVD

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.

AnalysisAI

Stored cross-site scripting in GFI HelpDesk before version 4.99.9 allows authenticated staff members to inject arbitrary JavaScript via the Troubleshooter step subject field, with execution occurring when any user views the affected step. The vulnerability stems from unsanitized POST parameter handling in Controller_Step.InsertSubmit() and EditSubmit() methods, enabling persistent payload storage and broad user impact within the application.

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CVE-2026-23756 vulnerability details – vuln.today
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