How severe is CVE-2026-42234?

CVE-2026-42234 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-42234 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42234?

CVE-2026-42234 primarily affects N8n. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-42234?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-42234 have an EU (EUVD) identifier?

Yes. CVE-2026-42234 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27109.

When was CVE-2026-42234 published?

CVE-2026-42234 was published on 2026-05-04 and last updated on 2026-06-17.

CVE-2026-42234

CVE-2026-42234 is a high-severity vulnerability in N8n with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.1
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-27109
Weakness: CWE-94
Affected product: N8n
Published: 2026-05-04
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-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 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.
How severe is CVE-2026-42234?: CVE-2026-42234 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-42234 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42234?: CVE-2026-42234 primarily affects N8n. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-42234?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42234 have an EU (EUVD) identifier?: Yes. CVE-2026-42234 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27109.
When was CVE-2026-42234 published?: CVE-2026-42234 was published on 2026-05-04 and last updated on 2026-06-17.

References

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

Affected products (2)

cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*
cpe:2.3:a:n8n:n8n:2.18.0:*:*:*:enterprise:node.js:*:*

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