CVE-2026-23753

GFI HelpDesk < 4.99.9 Stored XSS via charset Parameter

MEDIUM
4.8
CVSS Score
Published: April 20, 2026 at 05:33 PM UTC
Updated: October 26, 2026 at 09:10 PM UTC
1 product affected across 1 vendorHelpDesk

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.99.9
Affected range stops below 4.99.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMVulnCheck
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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