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CVE-2026-107393

FreeScout: Stored HTML Injection in Administrator Alert Emails via Spoofed CF-Connecting-IP Header PUBLISHED

Description (CNA)

FreeScout is a self-hosted help desk and shared mailbox. Prior to 1.8.235, when APP_CLOUDFLARE_IS_USED is enabled, FreeScout trusts an unvalidated CF-Connecting-IP header during failed login attempts and stores the spoofed value in the activity log. LogsMonitor inserts the value into an administrator alert email without HTML escaping, allowing injected HTML to execute when an administrator opens the email. This issue is fixed in version 1.8.235.

Affected (CNA)

Vendor / productVersions
freescout-help-desk / freescoutaffected < 1.8.235

CWE

CWE-79, CWE-116

References

ADP enrichment

CISA-ADP

No English description supplied.