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Description

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.

PUBLISHED Reserved 2026-01-15 | Published 2026-04-20 | Updated 2026-04-20 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

Any version before 4.99.9
affected

Credits

Alex Williams from Pellera Technologies finder

VulnCheck coordinator

References

gfi.ai/...ging-solutions/helpdesk/resources/product-releases vendor-advisory patch

www.vulncheck.com/...red-xss-via-troubleshooter-step-subject third-party-advisory

cve.org (CVE-2026-23756)

nvd.nist.gov (CVE-2026-23756)

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