CVEvulnerability
CVE-2026-40567
5.8 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-04-21
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.8 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
- Weaknesses
- CWE-116
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.
Related
Weakness · CWE (1)
- CWE-116 Improper Encoding or Escaping of Output weakness
References
- https://github.com/freescout-help-desk/freescout/commit/9131b16f80eade81002cb9809a2603f6b61981cf github.com
- https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213 github.com
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-q8v4-v62h-5528 github.com
- https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-q8v4-v62h-5528 github.com