Cyber Posture

CVE-2026-42232

High

Published: 04 May 2026

Published
04 May 2026
Modified
06 May 2026
KEV Added
—
Patch
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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0014 34.0th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-42232 is a high-severity Prototype Pollution (CWE-1321) vulnerability in N8N N8N. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 34.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190).
Threat & Defense Details

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Authenticated workflow modification in exposed n8n instance directly enables exploitation of prototype pollution for RCE on the server.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD 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 could achieve global prototype pollution via the XML Node leading to RCE when combined with…

more

other nodes exploiting the prototype pollution. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

Deeper analysisAI

Automated synthesis unavailable for this CVE.

Details

CWE(s)
CWE-1321

Affected Products

n8n
n8n
2.18.0 · ≤ 1.123.32 · 2.17.0 — 2.17.4

CVEs Like This One

CVE-2026-42231Same product: N8N N8N
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CVE-2026-25055Same product: N8N N8N
CVE-2026-21877Same product: N8N N8N
CVE-2026-1470Same product: N8N N8N
CVE-2026-27577Same product: N8N N8N
CVE-2026-27493Same product: N8N N8N
CVE-2026-27498Same product: N8N N8N

References