CVE-2026-56777Medium· 5.0▾ Sunlitn8n 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 by…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 27.5 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Nov 3.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.3%
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.
n8n >= 2.26.0 < 2.26.2n8n < 2.25.7Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
GHSA-jwm3-qcfw-c5ppMedium· 5.0n8n: Python Code Node AST Validator Bypass
CVE-2026-119408High· 8.8n8n before 2.42.6, 2.43.3 and 3.0.1 Code Execution Outside Task Runner Isolation via Deprecated Function Nodes
CVE-2026-56778Medium· 6.4n8n - Authorization Bypass in Public API Execution Retry Endpoint
CVE-2026-56776High· 7.4n8n - Incorrect OAuth Scope Validation in Workflow Test Run Endpoint
CVE-2026-56775Medium· 5.4n8n - Incorrect OAuth Scope Validation in Evaluation Test Runs Endpoints
CVE-2026-56358Medium· 5.4n8n - Stored Cross-Site Scripting in Form Trigger Node