High severity · published May 4, 2026
CVE-2026-42234
n8n: Python Task Runner Sandbox Escape
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows containing a Python Code Node could escape the sandbox and achieve arbitrary code execution on the task runner container. This issue only affects instances where the Python Task Runner is enabled. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n-io
< 1.123.32; >= 2.17.0, < 2.17.4; >= 2.18.0, < 2.18.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42234
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-42234
Vendor Advisory
https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4
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