CVE-2026-41906 FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass
A low-privileged agent can bypass authorization checks to bind conversations to customers in other mailboxes, modifying data across scopes.
- 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-2026-41906?
CVE-2026-41906 is a high-severity missing authorization 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 1.8.214, the Change Customer modal correctly hides out-of-scope customers through the mailbox-filtered search endpoint, but the backend conversation_change_customer action accepts any supplied customer_email. A low-privileged agent can forge a request and bind a visible conversation to a hidden customer in another mailbox. This issue has been patched in version 1.8.214.
Weakness: CWE-639
Which versions are affected by CVE-2026-41906?
How do I fix CVE-2026-41906?
No fix has been published for CVE-2026-41906 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-41906 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41906 exists.
Sources
Also known as GHSA-p6hg-2cwg-rrx9.