CVE-2026-34442
MEDIUMFreeScout: Host Header Injection Leading to External Resource Loading and Open Redirect in FreeScout
Title source: cnaDescription
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.
Scores
CVSS v3
5.4
EPSS
0.0008
EPSS Percentile
22.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-20
CWE-601
CWE-829
Status
published
Products (2)
freescout/freescout
< 1.8.211
freescout-help-desk/freescout
< 1.8.211
Published
Mar 31, 2026
Tracked Since
Apr 01, 2026