CVE-2026-40567

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.

The following products are affected by CVE-2026-40567 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40567.

URL	Resource
https://github.com/freescout-help-desk/freescout/commit/9131b16f80eade81002cb9809a2603f6b61981cf
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-q8v4-v62h-5528