Arbitrary Code Injection Affecting n8n package, versions <2.37.7-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.36% (30th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-N8N-19687994
  • published12 Sept 2026
  • disclosed8 Sept 2026

Introduced: 8 Sep 2026

NewCVE-2026-86083  (opens in a new tab)
CWE-94  (opens in a new tab)

How to fix?

Upgrade Minimos:latest n8n to version 2.37.7-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream n8n package and not the n8n package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the legacy expression engine generated source text by calling the mutable global JSON.stringify while printing synthetic string literals and interpolating timezone data. An expression could replace JSON.stringify and cause later generated source to contain executable attacker-controlled code. The affected code-generation paths include packages/@n8n/expression-runtime/src/bridge/isolated-vm-bridge.ts and packages/@n8n/tournament/src/ExpressionBuilder.ts, and the issue does not affect the vm expression engine. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

CVSS Base Scores

version 3.1