CVE-2026-86996— n8n: Agent Workflow Tool Bypasses Sub-Workflow Caller Policy
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 之前，名为“此工作流可被调用”（This workflow can be called by）的工作流设置在通过“执行工作流”（Execute Workflow）节点时被强制执行，但当工作流作为工具附加到智能体（Agent）时并未被强制检查。能够构建智能体的用户可以调用受限的工作流并读取其返回的数据。受影响的路径位于 ，其中 函数遗漏了 的调用。该问题已在版本 2.37.7 和 2.38.2 中修复。
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I. Basic Information for CVE-2026-86996
Vulnerability Information
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Vulnerability Title
n8n: Agent Workflow Tool Bypasses Sub-Workflow Caller Policy
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 workflow setting named This workflow can be called by was enforced by the Execute Workflow node but not when a workflow was attached to an Agent as a tool. A user able to build an Agent could invoke a restricted workflow and read its returned data. The affected path is packages/cli/src/modules/agents/tools/workflow-tool-factory.ts, where executeWorkflow omitted SubworkflowPolicyChecker.checkForProject. 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:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-86996
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Patches & Fixes for CVE-2026-86996 (1)
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🔗 Release n8n@2.38.2 · n8n-io/n8n · GitHub x_refsource_MISC
Vendor Advisories for CVE-2026-86996 (1)
Vendor Pages for CVE-2026-86996 (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-2026-86074 | 5.9 MEDIUM | n8n: Instance AI Credential Setup Accepts Unvalidated Probe URL from Fetched Content |
| 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-2026-86085 | 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-862
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CVE-2026-12956
Eventin <= 4.1.22 - Missing Authorization to Unauthenticated -
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Tanium addressed an improper access controls vulnerability i -
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Tanium addressed an improper access controls vulnerability i -
CVE-2026-87073
Tanium addressed an improper access controls vulnerability i -
CVE-2026-87072
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