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CVE-2026-45295— FreeScout Vulnerable to Unauthenticated Thread Read-Status Manipulation and Conversation Enumeration via Open Tracking Endpoint

Quick assessment

Affected
freescout-help-desk freescout
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeScout是FreeScout公司开源的一个使用 PHP(Laravel 框架)构建的超轻量级且功能强大的免费开源帮助台和共享收件箱。 FreeScout 1.8.219之前版本存在授权问题漏洞，该漏洞源于开放跟踪端点 缺少身份验证，允许未经身份验证的攻击者枚举有效的对话和线程ID，并修改线程状态。

CVSS 6.5 · Medium EPSS 0.34% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
freescout-help-desk freescout < 1.8.219 affected
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I. Basic Information for CVE-2026-45295

Vulnerability Information
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Vulnerability Title
FreeScout Vulnerable to Unauthenticated Thread Read-Status Manipulation and Conversation Enumeration via Open Tracking Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.219, the open tracking endpoint `GET /thread/read/{conversation_id}/{thread_id}` allows unauthenticated attackers to enumerate valid conversation and thread IDs, and modify thread state (`opened_at` timestamp) without any authentication. Version 1.8.219 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
FreeScout 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeScout是FreeScout公司开源的一个使用 PHP(Laravel 框架)构建的超轻量级且功能强大的免费开源帮助台和共享收件箱。 FreeScout 1.8.219之前版本存在授权问题漏洞，该漏洞源于开放跟踪端点`GET /thread/read/{conversation_id}/{thread_id}`缺少身份验证，允许未经身份验证的攻击者枚举有效的对话和线程ID，并修改线程状态。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
freescout-help-desk freescout < 1.8.219 -

II. Public POCs for CVE-2026-45295

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III. Intelligence Information for CVE-2026-45295

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Vendor Advisories for CVE-2026-45295 (1)

Same Patch Batch · freescout-help-desk · 2026-07-20 · 8 CVEs total

CVE-2026-53595 9.4 CRITICAL FreeScout vulnerable to anonymous account takeover via /user-setup empty invite_hash on My
CVE-2026-53593 8.8 HIGH FreeScout Vulnerable to Authenticated Remote Code Execution via incomplete upload extensio
CVE-2026-53591 8.6 HIGH FreeScout Vulnerable to Unauthenticated Conversation Thread Injection via HMAC Length Bypa
CVE-2026-48812 7.5 HIGH FreeScout Allows Unauthenticated Access to Legacy Attachment Files
CVE-2026-53596 5.3 MEDIUM FreeScout has unrestricted file upload without rate limiting that leads to resource exhaus
CVE-2026-53594 4.9 MEDIUM FreeScout has Arbitrary File Read in App Logs Viewer via Forged Encrypted Path
CVE-2026-53592 4.6 MEDIUM FreeScout vulnerable to prototype pollution in getQueryParam

IV. Related Vulnerabilities

Same product: freescout
Same vendor: freescout-help-desk
Same weakness: CWE-639

V. Comments for CVE-2026-45295

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