CVE-2026-41905 Server-side request forgery in freescout
Attackers can exploit a redirect validation flaw in FreeScout to access internal network resources and cloud metadata endpoints.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41905?
CVE-2026-41905 is a high-severity server-side request forgery vulnerability in freescout-help-desk freescout, published on 7 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-41905?
How do I fix CVE-2026-41905?
No fix has been published for CVE-2026-41905 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-41905 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41905 exists.
Sources
Also known as GHSA-22wf-848c-c856.