Vulnerability · Published May 7, 2026 · Assigned by GitHub_M

CVE-2026-41906FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass

High 7.1

In plain English

A high-severity authorization bypass via user-controlled key in freescout from freescout-help-desk. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.2%top 93.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
freescout-help-desk	freescout	< 1.8.214

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

References

https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-p6hg-2cwg-rrx9 x_refsource_CONFIRM
https://github.com/freescout-help-desk/freescout/releases/tag/1.8.214 x_refsource_MISC