CVE-2026-40570 FreeScout's Missing Authorization in load_customer_info Allows Any Authenticated User to Access Full Customer PII
Any authenticated user can access full customer PII via the load_customer_info action without proper mailbox access verification.
- 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-2026-40570?
CVE-2026-40570 is a medium-severity missing authorization vulnerability in freescout-help-desk freescout, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, the `load_customer_info` action in `POST /conversation/ajax` returns complete customer profile data to any authenticated user without verifying mailbox access. An attacker only needs a valid email address to retrieve all customer PII. Version 1.8.213 fixes the issue.
Which versions are affected by CVE-2026-40570?
How do I fix CVE-2026-40570?
No fix has been published for CVE-2026-40570 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-2026-40570 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40570 exists.
Sources
Also known as GHSA-w77q-wjfp-c822.