CVE-2026-40567

MediumCVSS 5.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 5.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Weakness enumeration

CWE-116

Affected software

No affected versions have been published.

Timeline

Published: Apr 21, 2026
Last modified: Jun 17, 2026
NVD status: Deferred

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