PT-2026-54049 · N8N · N8N

Mistz1 · Publicado 2026-06-30 · Atualizado 2026-06-30 · CVE-2026-56777

NVD

CVSS v3.1

5.0

Média

Vetor base

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstract syntax tree (AST) security validator bypass in the Python Code node. An authenticated user with permission to create or modify workflows containing a Python Code node can bypass the validator and access the task executor module namespace. The issue only affects self-hosted instances where the Python Task Runner is enabled; where N8N BLOCK RUNNER ENV ACCESS is configured to allow it, this can disclose environment variables accessible to the task runner process.

Correção

Incomplete List of Disallowed Inputs

Enumeração de Fraquezas

CWE-184

Identificadores relacionados

CVE-2026-56777

Produtos afetados

N8N

Referências · 3

• https://github.com/n8n-io/n8n/security/advisories/GHSA-jwm3-qcfw-c5pp · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2026-56777 · Nota de Segurança
• https://vulncheck.com/advisories/n8n-ast-validator-bypass-in-python-code-node · Nota