CVE-2026-23756 MEDIUM

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

Vendor Gfi Software
Product HelpDesk
Weakness CWE-79 · XSS
Published April 20, 2026
Last update April 20, 2026

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 20, 2026 CVE published
April 20, 2026 Record updated