CVE-2026-23756

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://gfi.ai/products-and-solutions/email-and-messaging-solutions/helpdesk/resources/product-releases	Release Notes
https://www.vulncheck.com/advisories/gfi-helpdesk-stored-xss-via-troubleshooter-step-subject	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gfi:helpdesk:*:*:*:*:*:*:*:*

History

27 Apr 2026, 15:02

Type	Values Removed	Values Added
First Time		Gfi Gfi helpdesk
CPE		cpe:2.3:a:gfi:helpdesk::::::::
References	~~() https://gfi.ai/products-and-solutions/email-and-messaging-solutions/helpdesk/resources/product-releases -~~	() https://gfi.ai/products-and-solutions/email-and-messaging-solutions/helpdesk/resources/product-releases - Release Notes
References	~~() https://www.vulncheck.com/advisories/gfi-helpdesk-stored-xss-via-troubleshooter-step-subject -~~	() https://www.vulncheck.com/advisories/gfi-helpdesk-stored-xss-via-troubleshooter-step-subject - Third Party Advisory

20 Apr 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-20 18:16

Updated : 2026-04-27 15:02

NVD link : CVE-2026-23756

Mitre link : CVE-2026-23756

CVE.ORG link : CVE-2026-23756

JSON object : View

Products Affected

gfi

helpdesk

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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