CVE-2026-23758: GFI HelpDesk before 4.99.9 contains a stored cross-site scripting vulnerability in the ticket subject field that…
CVE-2026-23758 · Severity: medium · CVSS 5.4 · Published 2026-04-20
GFI HelpDesk before 4.99.9 contains a stored cross-site scripting vulnerability in the ticket subject field that allows authenticated staff members to inject malicious JavaScript by manipulating the editsubject POST parameter. Attackers can inject XSS payloads through inadequate sanitization in Controller_Ticket.EditSubmit() that bypass the incomplete SanitizeForXSS() method to execute arbitrary JavaScript when other staff members or administrators view the affected ticket.
No. Junglewise Threat Intelligence has no report of CVE-2026-23758 being exploited in the wild.
How severe is CVE-2026-23758?
Medium severity, with a CVSS score of 5.4, published 20 April 2026.
Which products and versions are affected?
GFI Helpdesk. The advisory does not name versions.
Is there a fix for CVE-2026-23758?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-23758?
Check whether you run GFI Helpdesk. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.