CVE-2026-23756

low-risk
Published 2026-04-20

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.

Do I need to act?

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0.03% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.4/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Helpdesk

Affected Vendors

Gfi

References (2)

Release Notes https://gfi.ai/products-and-solutions/email-and-messaging-solutions/helpdesk/res...
Third Party Advisory https://www.vulncheck.com/advisories/gfi-helpdesk-stored-xss-via-troubleshooter-...
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal