Authentication Bypass Vulnerability in FreeScout Help Desk by Freescout
CVE-2026-35584

6.9MEDIUM

Key Information:

Vendor

Freescout-help-desk

Status
Freescout
Vendor
CVE Published:
7 April 2026

What is CVE-2026-35584?

FreeScout, a help desk and shared inbox tool built on the Laravel framework, has an authentication bypass vulnerability that allows unauthenticated users to manipulate conversation threads. Versions prior to 1.8.212 are affected. The vulnerability arises from the GET endpoint /thread/read/{conversation_id}/{thread_id} not validating ownership of thread IDs. Attackers can exploit this flaw to mark threads as read, test the existence of thread IDs through different HTTP response codes, and alter timestamps, which poses significant privacy risks and potential data leakage.

Affected Version(s)

freescout < 1.8.212

References

https://github.com/freescout-help-desk/freescout/security...
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CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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