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CVE-2026-40567

FreeScout has HTML Injection in Outgoing Emails via Unsanitized Customer Name in Signature Variables PUBLISHED

Description (CNA)

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, an unauthenticated attacker can inject arbitrary HTML into outgoing emails generated by FreeScout by sending an email with a crafted From display name. The name is stored in the database without sanitization and rendered unescaped into outgoing reply emails via the `{%customer.fullName%}` signature variable. This allows embedding phishing links, tracking pixels, and spoofed content inside legitimate support emails sent from the organization's address. Version 1.8.213 fixes the issue.

Affected (CNA)

Vendor / productVersions
freescout-help-desk / freescoutaffected < 1.8.213

CWE

CWE-116

References

ADP enrichment

CISA-ADP

No English description supplied.