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CVE-2026-42234

n8n: Python Task Runner Sandbox Escape

HIGH
8.8
CVSS Score
Published: May 4, 2026 at 06:36 PM UTC
Updated: June 17, 2026 at 10:47 AM UTC
2 products affected across 2 vendorsN8NN8N

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

N8N· N8Nnpm
95%
v < 1.123.322.17.0 ≤ v < 2.17.42.18.0
N8N· N8N Io
60%
v < 1.123.32v < 2.17.4v < 2.18.1
Affected range stops below 1.123.32, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.17.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.18.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/n8n-io/n8n/security/advisories/GHSA-44v6-jhgm-p3m4

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-94

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