Medium 5.4Published Mar 31, 2026

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

Updated under an hour ago (Oct 28, 2026, 8:23 AM ET)

Does this affect you?

It affects freescout-help-desk freescout and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for freescout-help-desk freescout

Exploited in the last 30 days

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.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-20, CWE-601, CWE-829
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

freescout-help-desk freescout freescout_help_desk:freescout (from the name)	before 1.8.211	CNA record
freescout freescout freescout:freescout	before 1.8.211	NVD

References

References

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-822g-7rw5-53xj	x-refsource-confirm, exploit, vendor-advisory
https://github.com/freescout-help-desk/freescout/commit/889d75c8e3c15e6a7ddb6a4d4f65cc0379c29213	x-refsource-misc, patch
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.211	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.