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CVE-2026-41194— FreeScout's Mailbox OAuth disconnect uses a state-changing GET and is CSRFable

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 1.8.215之前版本存在跨站请求伪造漏洞，该漏洞源于邮箱OAuth断开操作为GET路由，无需CSRF令牌，可能导致跨站点触发已登录邮箱管理员的操作。

CVSS 5.4 · Medium EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-41194

Vulnerability Information
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Vulnerability Title
FreeScout's Mailbox OAuth disconnect uses a state-changing GET and is CSRFable
Source: CVE Program / CVE List V5
Vulnerability Description
FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.215, the mailbox OAuth disconnect action is implemented as `GET /mailbox/oauth-disconnect/{id}/{in_out}/{provider}`. It removes stored OAuth metadata from the mailbox and then redirects. Because it is a GET route, no CSRF token is required and the action can be triggered cross-site against a logged-in mailbox admin. Version 1.8.215 fixes the vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
FreeScout 跨站请求伪造漏洞
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 1.8.215之前版本存在跨站请求伪造漏洞，该漏洞源于邮箱OAuth断开操作为GET路由，无需CSRF令牌，可能导致跨站点触发已登录邮箱管理员的操作。
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 < 1.8.215 -

II. Public POCs for CVE-2026-41194

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III. Intelligence Information for CVE-2026-41194

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Patches & Fixes for CVE-2026-41194 (1)

Vendor Advisories for CVE-2026-41194 (1)

Vendor Pages for CVE-2026-41194 (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-2026-41183 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-2026-40570 FreeScout's Missing Authorization in load_customer_info Allows Any Authenticated User to A
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-352

V. Comments for CVE-2026-41194

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