Stored Cross-Site Scripting in GFI HelpDesk Language Management
CVE-2026-23753

4.8MEDIUM

Key Information:

Vendor

Gfi Software

Status
Helpdesk
Vendor
CVE Published:
20 April 2026

What is CVE-2026-23753?

GFI HelpDesk prior to version 4.99.9 contains a vulnerability in its language management functionality, allowing an authenticated administrator to execute arbitrary JavaScript in the browser of any administrator who views the Languages page. This occurs due to the charset POST parameter being passed directly to the SWIFT_Language::Create() method without proper HTML sanitization, resulting in unsanitized content being rendered by View_Language.RenderGrid(). Exploitation of this vulnerability can lead to various attacks including session hijacking and data manipulation.

Affected Version(s)

HelpDesk 0 < 4.99.9

References

https://gfi.ai/products-and-solutions/email-and-messaging...
vendor-advisorypatch
https://www.vulncheck.com/advisories/gfi-helpdesk-stored-...
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Alex Williams from Pellera Technologies
VulnCheck
.