CVE-2026-41905

HIGH

FreeScout vulnerable to SSRF via Helper::sanitizeRemoteUrl: redirect destination not re-validated, allowing internal HTTP / cloud-metadata access

Title source: cna

Description

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.217, Helper::sanitizeRemoteUrl() in app/Misc/Helper.php follows HTTP redirects via curlGetLastRedirectedUrl() but then re-validates the original URL instead of the final redirect destination. An attacker who can supply any URL that passes the initial host check can redirect FreeScout to internal HTTP services (cloud metadata, internal APIs, RFC1918 ranges) that would normally be blocked. This issue has been patched in version 1.8.217.

References (2)

Core 2

Core References

X_Refsource_Confirm x_refsource_confirm

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-22wf-848c-c856

X_Refsource_Misc x_refsource_misc

https://github.com/freescout-help-desk/freescout/releases/tag/1.8.217

Scores

CVSS v3 7.7

EPSS 0.0021

EPSS Percentile 10.9%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-918

Status published

Products (1)

freescout-help-desk/freescout < 1.8.217

Published May 07, 2026

Tracked Since May 08, 2026