CVE-2026-34442 MEDIUM

CVE-2026-34442: FreeScout: Host Header Injection Leading to External Resource Loading and Open Redirect in FreeScout

Vendor Freescout-Help-Desk
Product freescout
Weakness CWE-20 · Input validation
Published March 31, 2026
Last update April 1, 2026
View on NVD All CVEs

CVSS base score

5.4/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.211, host header manipulation in FreeScout version (http://localhost:8080/system/status) allows an attacker to inject an arbitrary domain into generated absolute URLs. This leads to External Resource Loading and Open Redirect behavior. When the application constructs links and assets using the unvalidated Host header, user requests can be redirected to attacker-controlled domains and external resources may be loaded from malicious servers. This issue has been patched in version 1.8.211.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
April 1, 2026 Record updated