CVE-2026-48810 – FreeScout: Thread Edit Authorization Bypass via Missing Mailbox Check

CVE ID :CVE-2026-48810

Published : May 29, 2026, 8:16 p.m. | 15 minutes ago

Description :FreeScout is a free help desk and shared inbox built with PHP’s Laravel framework. Prior to 1.8.221, while investigating the ThreadPolicy::delete issue reported previously, the same missing mailbox membership check was found in the sibling ThreadPolicy::edit method. A user with the PERM_EDIT_CONVERSATIONS permission who created a message or internal note in Mailbox A can rewrite that thread’s body after an administrator removes them from Mailbox A, because the policy checks only authorship and a global permission flag — not current mailbox membership. This vulnerability is fixed in 1.8.221.

Severity: 4.3 | MEDIUM

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