CVE-2026-35584: CWE-306: Missing Authentication for Critical Function in freescout-help-desk freescout
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.212, the endpoint GET /thread/read/{conversation_id}/{thread_id} does not require authentication and does not validate whether the given thread_id belongs to the given conversation_id. This allows any unauthenticated attacker to mark any thread as read by passing arbitrary IDs, enumerate valid thread IDs via HTTP response codes (200 vs 404), and manipulate opened_at timestamps across conversations (IDOR). This vulnerability is fixed in 1.8.212.
AI Analysis
Technical Summary
FreeScout, a PHP Laravel-based help desk application, has a missing authentication vulnerability (CWE-306) combined with an insecure direct object reference (CWE-639) in the GET /thread/read/{conversation_id}/{thread_id} endpoint prior to version 1.8.212. The endpoint does not require authentication and does not validate that the thread_id belongs to the specified conversation_id, enabling unauthenticated attackers to mark arbitrary threads as read, enumerate valid thread IDs via HTTP response differences, and alter opened_at timestamps. This vulnerability has a CVSS 4.0 score of 6.9 (medium severity) and is fixed in version 1.8.212.
Potential Impact
An unauthenticated attacker can manipulate the state of threads in FreeScout by marking them as read and enumerating valid thread IDs. They can also alter timestamps related to thread openings. This could lead to information disclosure about valid thread IDs and manipulation of conversation metadata, potentially impacting the integrity and reliability of help desk data.
Mitigation Recommendations
Upgrade FreeScout to version 1.8.212 or later, where this vulnerability is fixed. Since the vendor advisory indicates the issue is resolved in this version, applying this official fix is the recommended remediation. Patch status is confirmed by the vendor's versioning information.
CVE-2026-35584: CWE-306: Missing Authentication for Critical Function in freescout-help-desk freescout
Description
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.212, the endpoint GET /thread/read/{conversation_id}/{thread_id} does not require authentication and does not validate whether the given thread_id belongs to the given conversation_id. This allows any unauthenticated attacker to mark any thread as read by passing arbitrary IDs, enumerate valid thread IDs via HTTP response codes (200 vs 404), and manipulate opened_at timestamps across conversations (IDOR). This vulnerability is fixed in 1.8.212.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
FreeScout, a PHP Laravel-based help desk application, has a missing authentication vulnerability (CWE-306) combined with an insecure direct object reference (CWE-639) in the GET /thread/read/{conversation_id}/{thread_id} endpoint prior to version 1.8.212. The endpoint does not require authentication and does not validate that the thread_id belongs to the specified conversation_id, enabling unauthenticated attackers to mark arbitrary threads as read, enumerate valid thread IDs via HTTP response differences, and alter opened_at timestamps. This vulnerability has a CVSS 4.0 score of 6.9 (medium severity) and is fixed in version 1.8.212.
Potential Impact
An unauthenticated attacker can manipulate the state of threads in FreeScout by marking them as read and enumerating valid thread IDs. They can also alter timestamps related to thread openings. This could lead to information disclosure about valid thread IDs and manipulation of conversation metadata, potentially impacting the integrity and reliability of help desk data.
Mitigation Recommendations
Upgrade FreeScout to version 1.8.212 or later, where this vulnerability is fixed. Since the vendor advisory indicates the issue is resolved in this version, applying this official fix is the recommended remediation. Patch status is confirmed by the vendor's versioning information.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-03T20:09:02.827Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5314faaed68159a33992b
Added to database: 4/7/2026, 4:31:11 PM
Last enriched: 4/15/2026, 12:31:18 PM
Last updated: 5/23/2026, 3:42:06 AM
Views: 73
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