CVE-2026-86074— n8n: Instance AI Credential Setup Accepts Unvalidated Probe URL from Fetched Content
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 是一个开源的工作流自动化平台。在 2.37.7 和 2.38.2 版本之前，实例 AI 的凭证设置流程在接受凭证测试或验证 URL 时，未校验该 URL 是否与工作流节点的源（origin）匹配。攻击者控制的已获取内容可能会在用户将其注入到设置流程后影响该 URL，导致经过身份验证的请求、重定向或探测发送到另一个源。受影响的逻辑包括 中的 源推导逻辑。该问题已在 2.37.7 和 2.38.2 版本中修复。
Possible ATT&CK Techniques 3 AI
T1113 · Screen Capture T1578 · Modify Cloud Compute Infrastructure T1200.004
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I. Basic Information for CVE-2026-86074
Vulnerability Information
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Vulnerability Title
n8n: Instance AI Credential Setup Accepts Unvalidated Probe URL from Fetched Content
Source: CVE Program / CVE List V5
Vulnerability Description
n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the Instance AI credential setup flow accepted a credential test or verification URL without checking that it matched the workflow node's origin. Attacker-controlled fetched content could influence that URL after a user injected it into the setup flow, causing authenticated requests, redirects, or probes to reach another origin. The affected logic includes packages/@n8n/instance-ai/src/tools/workflows/credential-utils.ts and the extractServiceOrigin origin derivation. This issue is fixed in versions 2.37.7 and 2.38.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-86074
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-86074 (1)
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🔗 Release n8n@2.38.2 · n8n-io/n8n · GitHub x_refsource_MISC
Vendor Advisories for CVE-2026-86074 (1)
Vendor Pages for CVE-2026-86074 (1)
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🔗 Release n8n@2.37.7 · n8n-io/n8n · GitHub x_refsource_MISC
Same Patch Batch · n8n-io · 2026-09-08 · 17 CVEs total
| CVE-2026-86076 | 8.7 HIGH | n8n: Expression Sandbox Escape in Editor-UI Enables Stored Cross-User JavaScript Execution |
| CVE-2026-86075 | 8.7 HIGH | n8n: Unauthenticated Persistent Storage Exhaustion via OAuth Dynamic Client Registration E |
| CVE-2026-86083 | 7.7 HIGH | n8n: Expression Sandbox Escape via Shared Builtin Tampering and Code-Printer Injection Lea |
| CVE-2026-86082 | 7.1 HIGH | n8n: Domain-Restriction Bypass via Unguarded Model-Search Endpoint in OpenAI Chat Model No |
| CVE-2026-86081 | 7.1 HIGH | n8n: Regular Expression Denial of Service in the Default Blocked-File-Pattern Match via a |
| CVE-2026-86077 | 6.3 MEDIUM | n8n: Anonymous Approval-Gate Bypass via Reused resumeToken over the Chat WebSocket |
| CVE-2026-86080 | 6.3 MEDIUM | n8n: GitHub Trigger 422 Reuse Path Skips Webhook Secret Storage, Causing Signature Verific |
| CVE-2026-86079 | 6.3 MEDIUM | n8n: Path Injection in Elasticsearch and ElasticSecurity Nodes via Unencoded Identifiers |
| CVE-2026-86084 | 6.0 MEDIUM | n8n: Disabled OIDC SSO Endpoints Remain Active and Issue Valid Sessions |
| CVE-2026-86078 | 6.0 MEDIUM | n8n: Prototype Pollution via Workflow Structure Summary Can Lead to Denial of Service |
| CVE-2026-86073 | 5.9 MEDIUM | n8n: Per-Resource OAuth Consent Bypass via Unbound Refresh Token Resource Substitution |
| CVE-2026-86993 | 5.9 MEDIUM | n8n: Log Streaming Event Destinations Decrypt Generic-Auth Credentials Without Ownership C |
| CVE-2026-86994 | 5.3 MEDIUM | n8n: Cross-User Active Workflow ID and Lifecycle Event Disclosure via Missing userId Filte |
| CVE-2026-86995 | 5.3 MEDIUM | n8n: Git Node branch.<name>.remote Config Key Bypasses Sandbox Path Restriction, Enabling |
| CVE-2026-86996 | 5.3 MEDIUM | n8n: Agent Workflow Tool Bypasses Sub-Workflow Caller Policy |
| CVE-2026-86085 | 5.1 MEDIUM | n8n: Cross-Tenant Project-Member PII Disclosure via Missing Per-Project Scope Check on Rol |
IV. Related Vulnerabilities
Same product: n8n
-
CVE-2026-86075
n8n: Unauthenticated Persistent Storage Exhaustion via OAuth -
CVE-2026-86076
n8n: Expression Sandbox Escape in Editor-UI Enables Stored C -
CVE-2026-86077
n8n: Anonymous Approval-Gate Bypass via Reused resumeToken o -
CVE-2026-86078
n8n: Prototype Pollution via Workflow Structure Summary Can -
CVE-2026-86079
n8n: Path Injection in Elasticsearch and ElasticSecurity Nod
Same vendor: n8n-io
-
CVE-2026-86075
n8n: Unauthenticated Persistent Storage Exhaustion via OAuth -
CVE-2026-86076
n8n: Expression Sandbox Escape in Editor-UI Enables Stored C -
CVE-2026-86077
n8n: Anonymous Approval-Gate Bypass via Reused resumeToken o -
CVE-2026-86078
n8n: Prototype Pollution via Workflow Structure Summary Can -
CVE-2026-86079
n8n: Path Injection in Elasticsearch and ElasticSecurity Nod
Same weakness: CWE-918
-
CVE-2026-87084
Tanium addressed a server-side request forgery vulnerability -
CVE-2026-87595
Chrome<153 SSRF低危漏洞 -
CVE-2026-86082
n8n: Domain-Restriction Bypass via Unguarded Model-Search En -
CVE-2026-86806
opengeos GeoLibre _is_within_roots server-side request forge -
CVE-2026-66304
Skype for Business Information Disclosure Vulnerability
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