What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-07 · updated 2026-06-17
• Weakness: CWE-639

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

• freescout-help-desk freescout: before 1.8.214

References

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

Get alerted when CVE-2026-41906 or the next vulnerability affects your stack