CVE-2026-41905: FreeScout vulnerable to SSRF via Helper::sanitizeRemoteUrl: redirect destination not re-validated, allowing internal HTTP / cloud-metadata access
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-41905?
CVE-2026-41905 is considered a high severity vulnerability due to its potential for SSRF attacks allowing access to internal resources.
How do I fix CVE-2026-41905?
To fix CVE-2026-41905, upgrade FreeScout to version 1.8.217 or later.
What type of vulnerability is CVE-2026-41905?
CVE-2026-41905 is an SSRF (Server-Side Request Forgery) vulnerability.
What applications are affected by CVE-2026-41905?
CVE-2026-41905 affects FreeScout versions prior to 1.8.217.
What can attackers do exploiting CVE-2026-41905?
Attackers exploiting CVE-2026-41905 may gain access to internal HTTP services or cloud metadata.