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Vulnerability record · CVE-2026-34442 · published 31 March 2026

CVE-2026-34442: Freescout improper input validation vulnerability

Freescout · Freescout

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.

6.1 CVSS 3.1 Medium EPSS 0.32% · top 77.5% CWE-20 · Improper input validationCWE-601 · Open redirect
6.1CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
24 Jul 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/freescout-help-desk/freescout/commit/889d75c8e3c15e6a7ddb6a4d4f65cc0379c29213 Patch
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.211 Release Notes
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-822g-7rw5-53xj ExploitVendor Advisory
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-822g-7rw5-53xj ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-34442), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.