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CVE-2026-54308— n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node

Quick assessment

Affected
n8n-io n8n
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.

n8n-io n8n是n8n-io的消息队列中间件。 n8n-io n8n 2.25.7之前版本和2.26.2之前版本存在授权问题漏洞，该漏洞源于MicrosoftAgent365Trigger和StripeTrigger节点未验证入站请求，可能导致未经身份验证的攻击者知道webhook URL时，提交伪造的有效载荷，使工作流使用攻击者控制的数据执行。

AI Predicted 8.6 Difficulty: Easy EPSS 0.30% · P20

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
n8n-io n8n >= 2.26.0, < 2.26.2 affected
< 2.25.7 affected
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I. Basic Information for CVE-2026-54308

Vulnerability Information
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Vulnerability Title
n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node
Source: CVE Program / CVE List V5
Vulnerability Description
n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger node did not validate that inbound requests. As a result, an unauthenticated attacker who knows the webhook URL could submit a forged payload and cause the workflow to execute with attacker-controlled data. This vulnerability is fixed in 2.25.7 and 2.26.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
n8n-io n8n 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n-io n8n是n8n-io的消息队列中间件。 n8n-io n8n 2.25.7之前版本和2.26.2之前版本存在授权问题漏洞，该漏洞源于MicrosoftAgent365Trigger和StripeTrigger节点未验证入站请求，可能导致未经身份验证的攻击者知道webhook URL时，提交伪造的有效载荷，使工作流使用攻击者控制的数据执行。
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
n8n-io n8n >= 2.26.0, < 2.26.2 -

II. Public POCs for CVE-2026-54308

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III. Intelligence Information for CVE-2026-54308

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Vendor Advisories for CVE-2026-54308 (1)

Same Patch Batch · n8n-io · 2026-06-23 · 21 CVEs total

CVE-2026-54314 n8n: Denial of Service via ZIP decompression in webhook workflow
CVE-2026-44791 n8n: XML Node Prototype Pollution Patch Bypass
CVE-2026-44789 n8n: HTTP Request Node Pagination Prototype Pollution to RCE
CVE-2026-44792 n8n: Source Control Pull SQL Injection
CVE-2026-44790 n8n: Arbitrary File Read via Git Node
CVE-2026-49444 n8n: Python sandbox escape
CVE-2026-49465 n8n: Git Node Clone and Push Operations Bypass File Sandbox
CVE-2026-54304 n8n: SecurityScorecard Node Leaks API Token to User-Controlled Host
CVE-2026-54301 n8n: Same-Origin XSS in Respond to Webhook Node
CVE-2026-54310 n8n: SQL Injection in Postgres v1/TimesclaeDB Nodes
CVE-2026-45732 n8n: Cross-user Authorization Bypass in Dynamic Credential OAuth Endpoints
CVE-2026-54302 n8n: Stored XSS in Chat Trigger Node
CVE-2026-54306 n8n: Prototype Pollution enables confused-deputy execution via public webhooks
CVE-2026-54313 n8n: NoSQL Injection in MongoDB Node Find And Replace Operation
CVE-2026-54303 n8n: Reflected XSS via Facebook, WhatsApp, and Microsoft Teams Trigger Webhook Verificatio
CVE-2026-54305 n8n: Cross-Tenant Credential Takeover via Dynamic Credentials EE Endpoints
CVE-2026-54307 n8n: Credential Exfiltration via Permission Bypass
CVE-2026-54312 n8n: Microsoft SQL Node Prototype Pollution
CVE-2026-54309 n8n: n8n MCP Browser HTTP Transport Exposes Unauthenticated Browser-Control Sessions
CVE-2026-54311 n8n: Merge Node SQL Mode Prototype Pollution

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-290

V. Comments for CVE-2026-54308

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