n8n Python Code Node (Pyodide) sandbox bypass leading to host command execution (N8scape)
n8n (open-source workflow automation) contains a sandbox bypass in the Python Code Node implementation that uses Pyodide. In affected versions (>= 1.0.0 and < 2.0.0), an authenticated user who can create or modify workflows can escape the intended Pyodide sandbox and execute arbitrary commands on the underlying host operating system with the same privileges as the n8n service process. The issue is fixed in n8n 2.0.0, which moves Python execution to a more isolated task-runner/native Python model by default.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
63 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical n8n vulnerability that allows an authenticated attacker to execute arbitrary system commands on the underlying host (protection mechanism failure).
n8n authenticated system command execution due to protection mechanism failure.
A previously disclosed n8n Pyodide sandbox escape vulnerability referenced for similarity to Cellbreak.
A Pyodide sandbox escape vulnerability affecting n8n (referenced as a similar issue to the Grist-Core flaw).
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.