CVE-2026-35584

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-873c-r7v5-g98v	Exploit Vendor Advisory
https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-873c-r7v5-g98v	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-07 17:16

Updated : 2026-06-17 10:40

NVD link : CVE-2026-35584

Mitre link : CVE-2026-35584

CVE.ORG link : CVE-2026-35584

JSON object : View

Products Affected

freescout

freescout

CWE

CWE-306

Missing Authentication for Critical Function

CWE-639

Authorization Bypass Through User-Controlled Key

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