CVE-2026-23756 — Cross-Site Scripting (XSS)
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 st
What This Means For You
- If your environment is affected by CWE-79, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-23756 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
GFI HelpDesk Stored XSS in Troubleshooter Subject - CVE-2026-23756
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-23756 | vulnerability | CVE-2026-23756 |
| CWE-79 | weakness | CWE-79 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 20, 2026 at 21:16 UTC |
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