Vulnerability · Published Apr 7, 2026 · Assigned by GitHub_M
CVE-2026-39384FreeScout Customer Merge Cross-Mailbox Authorization Bypass
High 7.6
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 16% of all known vulnerabilities).
Severity (CVSS 3.1)7.6High
Exploit odds (30 days)0.2%top 84.3% 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 1.8.212, FreeScout does not take the limit_user_customer_visibility parameter into account when merging customers. This vulnerability is fixed in 1.8.212.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| freescout-help-desk | freescout | < 1.8.212 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L