CVE-2026-110848— n8n before 1.123.83, 2.41.4, and 2.42.1 Prototype Pollution via AI Workflow Builder Connection Merge
一分钟漏洞结论
影响对象
n8n-io n8n
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains a prototype pollution vulnerability in the AI workflow builder, which merges workflow connections using node names as object members without checking for reserved keys. Authenticated use
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一、 漏洞 CVE-2026-110848 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
n8n before 1.123.83, 2.41.4, and 2.42.1 Prototype Pollution via AI Workflow Builder Connection Merge
来源: CVE Program / CVE List V5
Vulnerability Description
n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains a prototype pollution vulnerability in the AI workflow builder, which merges workflow connections using node names as object members without checking for reserved keys. Authenticated users can create nodes named __proto__ through the API and invoke the connect-nodes operation to pollute the global object prototype, disrupting the instance until restart.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-110848 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
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CVE-2026-110848 其他参考 (2)
同批安全公告 · n8n-io · 2026-10-14 · 共 14 条
| CVE-2026-110843 | 8.2 HIGH | n8n before 2.41.4 and 2.42.1 Unauthenticated Unbounded OAuth Client Persistence via Author |
| CVE-2026-110842 | 7.7 HIGH | n8n before 2.41.4 and 2.42.1 Prototype Pollution via MCP Workflow-Validation Interpreter |
| CVE-2026-110845 | 7.7 HIGH | n8n before 1.123.83, 2.41.4, and 2.42.1 Code Execution via Git Node Log Operation |
| CVE-2026-110850 | 7.2 HIGH | n8n before 2.41.4 and 2.42.1 Credential Check Bypass via Agent Node Parameters |
| CVE-2026-110844 | 7.2 HIGH | n8n before 1.123.83 Credential Authorization Bypass via Nested Inline Sub-Workflows |
| CVE-2026-110849 | 7.2 HIGH | n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binary-Data File Preview |
| CVE-2026-110853 | 7.1 HIGH | n8n before 1.123.83 Authorization Bypass via Execute Sub-workflow Inline JSON |
| CVE-2026-110846 | 7.0 HIGH | n8n before 2.41.4 and 2.42.1 Send-and-Wait HMAC Signature Bypass via Waiting-Webhook |
| CVE-2026-110847 | 7.0 HIGH | n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Chat Trigger customCss Parameter |
| CVE-2026-110840 | 7.0 HIGH | n8n before 2.41.4 and 2.42.1 SQL Injection via Microsoft SQL Node Query Field |
| CVE-2026-110852 | 6.3 MEDIUM | n8n before 1.123.83, 2.41.4, and 2.42.1 Unauthenticated Workflow Execution via Dynamic-Pat |
| CVE-2026-110851 | 6.1 MEDIUM | n8n before 2.41.4 and 2.42.1 Cross-Project Agent Ownership Transfer via Agents Create Endp |
| CVE-2026-110841 | 6.1 MEDIUM | n8n before 2.41.4 and 2.42.0 Authorization Bypass in Agent Chat Resume Tool Approval |
IV. Related Vulnerabilities
Same product: n8n
-
CVE-2026-110853
n8n before 1.123.83 Authorization Bypass via Execute Sub-wor -
CVE-2026-110852
n8n before 1.123.83, 2.41.4, and 2.42.1 Unauthenticated Work -
CVE-2026-110851
n8n before 2.41.4 and 2.42.1 Cross-Project Agent Ownership T -
CVE-2026-110850
n8n before 2.41.4 and 2.42.1 Credential Check Bypass via Age -
CVE-2026-110849
n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binar
Same vendor: n8n-io
-
CVE-2026-110853
n8n before 1.123.83 Authorization Bypass via Execute Sub-wor -
CVE-2026-110852
n8n before 1.123.83, 2.41.4, and 2.42.1 Unauthenticated Work -
CVE-2026-110851
n8n before 2.41.4 and 2.42.1 Cross-Project Agent Ownership T -
CVE-2026-110850
n8n before 2.41.4 and 2.42.1 Credential Check Bypass via Age -
CVE-2026-110849
n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binar
V. Comments for CVE-2026-110848
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