---
id: CVE-2026-23756
title: GFI HelpDesk < 4.99.9 Stored XSS via Troubleshooter Step Subject
summary: "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 Vi…"
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: GFI Software
product: HelpDesk
affected:
  - HelpDesk < 4.99.9
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-04-20T18:08:39.341495Z'
published: '2026-04-20'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T15:19:50.948Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23756'
references:
  - url: >-
      https://gfi.ai/products-and-solutions/email-and-messaging-solutions/helpdesk/resources/product-releases
  - url: >-
      https://www.vulncheck.com/advisories/gfi-helpdesk-stored-xss-via-troubleshooter-step-subject
tags:
  - cve.org
epss: 0.00141
epssPercentile: 0.02859
ingestedAt: '2026-10-01T15:48:17.869Z'
---

## Overview

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.

## Affected

- `HelpDesk < 4.99.9`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.