CVE-2026-41903: FreeScout IDOR Vulnerability: PERM_EDIT_USERS allows modifying any user's notification subscriptions (incomplete fix of CVE-2025-48472)
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.217, a user holding the PERMEDITUSERS permission (intended for general user-profile editing) can read and modify the notification subscriptions of any other user, including admins, by sending a single POST request. This is a sibling of CVE-2025-48472's notification authorization bypass — the prior fix did not cover this code path. A non-admin attacker can silently disable an admin's email/browser/mobile notifications, suppressing security alerts and conversation-assignment notices. This issue has been patched in version 1.8.217.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-41903?
CVE-2026-41903 has a medium severity rating due to its potential for unauthorized modification of user notification subscriptions.
How do I fix CVE-2026-41903?
To fix CVE-2026-41903, upgrade FreeScout to version 1.8.217 or later.
Which versions of FreeScout are affected by CVE-2026-41903?
CVE-2026-41903 affects FreeScout versions prior to 1.8.217.
What type of vulnerability is CVE-2026-41903?
CVE-2026-41903 is an Insecure Direct Object Reference (IDOR) vulnerability.
What permissions are involved in CVE-2026-41903?
CVE-2026-41903 involves users holding the PERM_EDIT_USERS permission.