FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Versions 1.8.185 and earlier contain a deserialization of untrusted data vulnerability that allows authenticated attackers with knowledge of the application's APP_KEY to achieve remote code execution. The vulnerability is exploited via endpoint, e.g.: `/help/{mailbox_id}/auth/{customer_id}/{hash}/{timestamp}` where the `customer_id` and `timestamp` parameters are processed through the decrypt function in `app/Helper.php` without proper validation. The code decrypts using Laravel's built-in encryption functions, which subsequently deserialize the decrypted payload without sanitization, allowing attackers to craft malicious serialized PHP objects using classes to trigger arbitrary command execution. This is fixed in version 1.8.186.
History

Wed, 03 Sep 2025 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Freescout Helpdesk
Freescout Helpdesk freescout
Vendors & Products Freescout Helpdesk
Freescout Helpdesk freescout

Wed, 03 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 03 Sep 2025 03:30:00 +0000


Wed, 03 Sep 2025 03:00:00 +0000


Wed, 03 Sep 2025 02:45:00 +0000

Type Values Removed Values Added
Description FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. In versions 1.8.185 and below, the application performs deserialization of data that can allow authenticated attackers with knowledge of the application's APP_KEY to achieve remote code execution. The vulnerability can be exploited via endpoint: `/help/{mailbox_id}/auth/{customer_id}/{hash}/{timestamp}` where the `customer_id` and `timestamp` parameters are processed through the decrypt function in `app/Helper.php` without proper validation. The vulnerable code performs decryption using Laravel's built-in encryption functions, which subsequently deserializes the decrypted payload without sanitization. This is fixed in version 1.8.186. FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Versions 1.8.185 and earlier contain a deserialization of untrusted data vulnerability that allows authenticated attackers with knowledge of the application's APP_KEY to achieve remote code execution. The vulnerability is exploited via endpoint, e.g.: `/help/{mailbox_id}/auth/{customer_id}/{hash}/{timestamp}` where the `customer_id` and `timestamp` parameters are processed through the decrypt function in `app/Helper.php` without proper validation. The code decrypts using Laravel's built-in encryption functions, which subsequently deserialize the decrypted payload without sanitization, allowing attackers to craft malicious serialized PHP objects using classes to trigger arbitrary command execution. This is fixed in version 1.8.186.
References

Wed, 03 Sep 2025 01:45:00 +0000

Type Values Removed Values Added
Description FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. In versions 1.8.185 and below, the application performs deserialization of data that can allow authenticated attackers with knowledge of the application's APP_KEY to achieve remote code execution. The vulnerability can be exploited via endpoint: `/help/{mailbox_id}/auth/{customer_id}/{hash}/{timestamp}` where the `customer_id` and `timestamp` parameters are processed through the decrypt function in `app/Helper.php` without proper validation. The vulnerable code performs decryption using Laravel's built-in encryption functions, which subsequently deserializes the decrypted payload without sanitization. This is fixed in version 1.8.186.
Title FreeScout's deserialization of untrusted data can lead to Remote Code Execution
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-09-03T15:44:39.509Z

Reserved: 2025-08-27T13:34:56.186Z

Link: CVE-2025-58163

cve-icon Vulnrichment

Updated: 2025-09-03T13:47:23.188Z

cve-icon NVD

Status : Received

Published: 2025-09-03T02:15:37.193

Modified: 2025-09-03T03:15:38.257

Link: CVE-2025-58163

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-09-03T19:30:21Z