CVE-2026-42228— n8n: Hijacking of Unauthenticated Chat Execution
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I. Basic Information for CVE-2026-42228
Vulnerability Information
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Vulnerability Title
n8n: Hijacking of Unauthenticated Chat Execution
Source: NVD (National Vulnerability Database)
Vulnerability Description
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /chat WebSocket endpoint used by the Chat Trigger node's Hosted Chat feature did not verify that an incoming connection was authorized to interact with the target execution. An unauthenticated remote attacker who could identify a valid execution ID for a workflow in a waiting state could attach to that execution, receive the pending prompt intended for the legitimate user, and submit arbitrary input to resume or influence downstream workflow behavior. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
n8n 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n开源的一个可扩展的工作流自动化工具。 n8n 1.123.32之前版本、2.17.4之前版本和2.18.1之前版本存在安全漏洞，该漏洞源于Chat Trigger节点Hosted Chat功能的/chat WebSocket端点未验证传入连接是否授权与目标执行交互，可能导致未经身份验证的远程攻击者识别有效执行ID后附加到该执行，接收待处理提示并提交任意输入以恢复或影响下游工作流行为。
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
II. Public POCs for CVE-2026-42228
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- Hijacking of Unauthenticated Chat Execution · Advisory · n8n-io/n8n · GitHubx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-42228
Same Patch Batch · n8n-io · 2026-05-04 · 12 CVEs total
| CVE-2026-42232 | n8n: XML Node Prototype Pollution to RCE | |
| CVE-2026-42233 | n8n: SQL Injection in Oracle Database Node via Limit Field | |
| CVE-2026-42229 | n8n: SQL Injection in SeaTable Node | |
| CVE-2026-42235 | n8n: XSS via MCP OAuth client | |
| CVE-2026-42236 | n8n: Unauthenticated Denial of Service via MCP Client Registration | |
| CVE-2026-42237 | n8n: SQL Injection in Snowflake and MySQL Nodes | |
| CVE-2026-42226 | n8n: Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Rep | |
| CVE-2026-42230 | n8n: Open Redirect in MCP OAuth Consent Flow | |
| CVE-2026-42234 | n8n: Python Task Runner Sandbox Escape | |
| CVE-2026-42227 | n8n: Public API Variables IDOR Allows Cross-Project Secret Disclosure | |
| CVE-2026-42231 | n8n: Prototype Pollution in XML Webhook Body Parser Leads to RCE |
IV. Related Vulnerabilities
Same product: n8n
- CVE-2026-42237
n8n: SQL Injection in Snowflake and MySQL Nodes - CVE-2026-42236
n8n: Unauthenticated Denial of Service via MCP Client Regist - CVE-2026-42235
n8n: XSS via MCP OAuth client - CVE-2026-42234
n8n: Python Task Runner Sandbox Escape - CVE-2026-42233
n8n: SQL Injection in Oracle Database Node via Limit Field
Same vendor: n8n-io
- CVE-2026-42237
n8n: SQL Injection in Snowflake and MySQL Nodes - CVE-2026-42236
n8n: Unauthenticated Denial of Service via MCP Client Regist - CVE-2026-42235
n8n: XSS via MCP OAuth client - CVE-2026-42234
n8n: Python Task Runner Sandbox Escape - CVE-2026-42233
n8n: SQL Injection in Oracle Database Node via Limit Field
Same weakness: CWE-862
- CVE-2021-47932
WordPress TheCartPress 1.5.3.6 Privilege Escalation Unauthen - CVE-2025-15634
HCL BigFix WebUI is affected by a missing authorization vuln - CVE-2026-42297
Argo Workflows Is Missing Authorization in Sync ConfigMap Pr - CVE-2026-42174
Kirby: User avatar creation, replacement and deletion are no - CVE-2026-42137
Kirby: `pages.access/list` and `files.access/list` permissio
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