FreeScout < 1.8.224 - Invite Hash Authorization Bypass

FreeScout prior to 1.8.224 contains an authentication bypass caused by improper invitehash handling and decryption failure in user setup endpoint, letting anonymous attackers reset credentials and log in as the lowest-id activated user, exploit requires no authentication. id: CVE-2026-53595 info:...

CVE-2026-41902: Insufficient Session Expiration

FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.217, the /user-setup/hash endpoint accepts a 60-character random invitehash to set a new user's password. The endpoint performs no expiration check — the hash remains valid indefinitely until...

CVE-2025-48481: Improper Enforcement of Behavioral Workflow

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.180, an attacker with an unactivated email invitation containing invitehash, can exploit this vulnerability to self-activate their account, despite it being blocked or deleted, by leveraging the invitation link fro...