CVE-2026-42234
published 2026-05-04CVE-2026-42234: 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…
PriorityP260high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.38%
29.5th percentile
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.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| n8n-io | n8n | < 1.123.32 | 1.123.32 |
| n8n-io | n8n | — | — |
| n8n-io | n8n | — | — |
| n8n | n8n | < 1.123.32 | 1.123.32 |
| n8n | n8n | — | — |
| n8n | n8n | >= 0 < 1.123.32 | 1.123.32 |
| n8n | n8n | >= 2.17.0 < 2.17.4 | 2.17.4 |
| n8n | n8n | >= 2.17.0 < 2.17.4 | 2.17.4 |
| n8n | n8n | >= 2.18.0 < 2.18.1 | 2.18.1 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.07.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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VulDB
n8n-io n8n up to 1.123.31/2.17.3/2.18.0 code injection (GHSA-44v6-jhgm-p3m4)
vuldb·2026-05-04·CVSS 7.1
CVE-2026-42234 [HIGH] n8n-io n8n up to 1.123.31/2.17.3/2.18.0 code injection (GHSA-44v6-jhgm-p3m4)
A vulnerability labeled as critical has been found in n8n-io n8n up to 1.123.31/2.17.3/2.18.0. This affects an unknown part. Executing a manipulation can lead to code injection.
This vulnerability is registered as CVE-2026-42234. It is possible to launch the attack remotely. No exploit is available.
The affected component should be upgraded.
GHSA
n8n has a Python Task Runner Sandbox Escape Vulnerability
ghsa·2026-04-29
CVE-2026-42234 [HIGH] CWE-94 n8n has a Python Task Runner Sandbox Escape Vulnerability
n8n has a Python Task Runner Sandbox Escape Vulnerability
## Impact
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.
## Patches
The issue has been fixed in n8n versions 1.123.32, 2.17.4, and 2.18.1. Users should upgrade to one of these versions or later to remediate the vulnerability.
## Workarounds
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
- Limit workflow creation and editing permissions to fully trusted users only.
- Disable the Python Code node by adding `n8n-nodes-base.code` to the `NODES_EXCLUDE` en
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-04
Published