CVE-2026-86076highCWE-94

CVE-2026-86076: falha de alta gravidade em n8n-io n8n

n8n: Expression Sandbox Escape in Editor-UI Enables Stored Cross-User JavaScript Execution

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41Vexday Risk Score

Sem sinal de exploração. Ela tem prova de conceito pública.

ssvc Attendcvss 8.7epss 0.8%
da publicação à arma46 dias
Publicada no NVD8 de set.
1ª PoC+46d
n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the expression compiler sanitizer resolved through dynamically scoped this and did not reject reserved class member names. A class field named __sanitize could rebind the sanitizer and reach the Function constructor, enabling backend code execution and editor-preview JavaScript execution. The affected AST hook is PrototypeSanitizer in packages/workflow/src/expression-sandboxing.ts. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N
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