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CVE-2026-85165— n8n before 2.36.2 Expression Sandbox Bypass via SpreadElement

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.

以下是该漏洞描述的中文翻译： n8n 在 2.36.2 版本之前存在一个表达式沙箱逃逸漏洞：位于展开运算符（spread）、计算属性名（computed-key）、switch-case 或类扩展（class-extension）位置的自由标识符会解析为进程级全局变量。拥有工作流编辑权限的认证用户可以通过表达式求值机制修改宿主对象，且这些修改会在进程范围内生效，并持续存在直到服务重启。 --- 术语说明（供参考）： Expression sandbox bypass：表达式沙箱逃逸 Free identifiers

CVSS 7.2 · High

Possible ATT&CK Techniques 1 AI

T1204 · User Execution

Affected Version Matrix 4

VendorProduct Version RangeStatus
n8n-io n8n < 2.36.2 affected
2.36.2 unaffected
< 2.35.4 affected
2.35.4 unaffected
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I. Basic Information for CVE-2026-85165

Vulnerability Information
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Vulnerability Title
n8n before 2.36.2 Expression Sandbox Bypass via SpreadElement
Source: CVE Program / CVE List V5
Vulnerability Description
n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension positions resolve against process globals. Authenticated users with workflow-edit permission can mutate host objects through expression evaluation, with changes persisting process-wide until restart.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
n8n-io n8n 0 ~ 2.36.2 -
n8n-io n8n 0 ~ 2.35.4 -

II. Public POCs for CVE-2026-85165

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III. Intelligence Information for CVE-2026-85165

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Vendor Advisories for CVE-2026-85165 (2)

Same Patch Batch · n8n-io · 2026-09-03 · 9 CVEs total

CVE-2026-85169 8.7 HIGH n8n before 1.123.73 Remote Code Execution via $fromAI Prototype Leak
CVE-2026-85168 7.7 HIGH n8n before 1.123.73 Remote Code Execution via Git Node
CVE-2026-85166 7.2 HIGH n8n before 2.36.2 Credential Exfiltration via Workflow Tool Node
CVE-2026-85171 7.1 HIGH n8n before 1.123.73 Credential Exposure via Error Logging
CVE-2026-85170 7.1 HIGH n8n before 1.123.73 Local File Read and SSRF via Gmail and Brevo nodes
CVE-2026-85167 6.3 MEDIUM n8n before 2.36.2 Query Injection via Elasticsearch Firestore Nodes
CVE-2026-85172 5.3 MEDIUM n8n before 2.34.1 SSRF via Request Helper URI Validation Bypass
CVE-2026-85173 5.3 MEDIUM n8n before 2.36.2 Missing Authorization via Insights API

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-95

V. Comments for CVE-2026-85165

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