CVE-2026-23753

MEDIUM 4.8

GFI HelpDesk < 4.99.9 Stored XSS via charset Parameter

CVSS Score

4.8

EPSS Score

0.0%

EPSS Percentile

0th

GFI HelpDesk before 4.99.9 contains a stored cross-site scripting vulnerability in the language management functionality where the charset POST parameter is passed directly to SWIFT_Language::Create() without HTML sanitization and subsequently rendered unsanitized by View_Language.RenderGrid(). An authenticated administrator can inject arbitrary JavaScript through the charset field when creating or editing a language, and the payload executes in the browser of any administrator viewing the Languages page.

CWE	CWE-79
Vendor	gfi software
Product	helpdesk
Published	Apr 20, 2026

Stay Ahead of the Next One

Get instant alerts for gfi software helpdesk

Be the first to know when new medium vulnerabilities affecting gfi software helpdesk are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

GFI Software / HelpDesk

0 < 4.99.9

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gfi.ai: https://gfi.ai/products-and-solutions/email-and-messaging-solutions/helpdesk/resources/product-releases vulncheck.com: https://www.vulncheck.com/advisories/gfi-helpdesk-stored-xss-via-charset-parameter

Credits

Alex Williams from Pellera Technologies VulnCheck