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CVE-2026-40570— FreeScout's Missing Authorization in load_customer_info Allows Any Authenticated User to Access Full Customer PII

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 1.8.213之前版本存在安全漏洞，该漏洞源于POST /conversation/ajax中的load_customer_info操作返回完整的客户个人数据而未验证邮箱访问权限，可能导致任何经过身份验证的用户仅凭有效电子邮件地址检索所有客户个人信息。

AI Predicted 8.6 Difficulty: Easy EPSS 0.41% · P33

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2026-40570

Vulnerability Information
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Vulnerability Title
FreeScout's Missing Authorization in load_customer_info Allows Any Authenticated User to Access Full Customer PII
Source: CVE Program / CVE List V5
Vulnerability Description
FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, the `load_customer_info` action in `POST /conversation/ajax` returns complete customer profile data to any authenticated user without verifying mailbox access. An attacker only needs a valid email address to retrieve all customer PII. Version 1.8.213 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
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 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeScout是FreeScout公司的一个使用 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 1.8.213之前版本存在安全漏洞，该漏洞源于POST /conversation/ajax中的load_customer_info操作返回完整的客户个人数据而未验证邮箱访问权限，可能导致任何经过身份验证的用户仅凭有效电子邮件地址检索所有客户个人信息。
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 < 1.8.213 -

II. Public POCs for CVE-2026-40570

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III. Intelligence Information for CVE-2026-40570

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Vendor Advisories for CVE-2026-40570 (1)

Vendor Pages for CVE-2026-40570 (1)

Same Patch Batch · freescout-help-desk · 2026-04-21 · 20 CVEs total

CVE-2026-41193 9.1 CRITICAL FreeScout has Zip Slip path traversal in module installation that allows arbitrary file wr
CVE-2026-40569 9.0 CRITICAL FreeScout's Mass Assignment in Mailbox Connection Settings Enables Silent Email Exfiltrati
CVE-2026-40568 8.5 HIGH FreeScout Vulnerable to XSS via Mailbox Signature Due to Incomplete HTML Sanitization
CVE-2026-40497 8.1 HIGH FreeScout Vulnerable to CSS Injection via Stored Style Tag in Mailbox Signature (CSRF Toke
CVE-2026-40589 7.6 HIGH FreeScout has Customer Edit Cross-Mailbox Email Takeover
CVE-2026-41190 7.1 HIGH FreeScout has assigned-only visibility bypass via save_draft that allows hidden conversati
CVE-2026-41189 7.1 HIGH FreeScout has assigned-only visibility bypass that allows editing hidden customer-authored
CVE-2026-41191 7.1 HIGH FreeScout's signature only mailbox permission allows unauthorized mailbox chat setting cha
CVE-2026-40591 7.1 HIGH FreeScout: Improper Authorization in Phone Conversation Creation Enables Cross-Mailbox Hid
CVE-2026-41192 7.1 HIGH FreeScout's client-controlled attachment IDs allow deletion of existing conversation attac
CVE-2026-40565 6.1 MEDIUM FreeScout has Stored XSS / CSS Injection via linkify() — Unescaped URL in Anchor href
CVE-2026-40592 5.9 MEDIUM FreeScout's cross-user undo reply allows mailbox peers to recall another agent's outbound
CVE-2026-40567 5.8 MEDIUM FreeScout has HTML Injection in Outgoing Emails via Unsanitized Customer Name in Signature
CVE-2026-41194 5.4 MEDIUM FreeScout's Mailbox OAuth disconnect uses a state-changing GET and is CSRFable
CVE-2026-41183 4.3 MEDIUM FreeScout allows non-folder conversation queries to disclose assigned-only hidden conversa
CVE-2026-40590 4.3 MEDIUM FreeScout's Customer AJAX Create Modifies Hidden Existing Customer
CVE-2026-40566 4.1 MEDIUM FreeScout vulnerable to SSRF via IMAP/SMTP Connection Test Endpoints
CVE-2026-40498 FreeScout has Authentication Bypass and Information Disclosure in SystemController via /sy
CVE-2026-40496 FreeScout has Predictable Attachment Token that Allows Unauthenticated Private File Downlo

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-40570

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