Arbitrary Code Injection Affecting n8n-oci-entrypoint package, versions <2.33.4-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.31% (24th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-N8NOCIENTRYPOINT-19502773
  • published3 Sept 2026
  • disclosed20 Aug 2026

Introduced: 20 Aug 2026

NewCVE-2026-77077  (opens in a new tab)
CWE-94  (opens in a new tab)

How to fix?

Upgrade Minimos:latest n8n-oci-entrypoint to version 2.33.4-r0 or higher.

NVD Description

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

n8n versions before 1.123.69, 2.33.4, and 2.34.1 contain a JavaScript task runner VM sandbox escape. The runner's prototype-freezing routine covers globalThis functions but not internal module constructors such as EventEmitter, allowing an authenticated user with Code node access to exploit prototype pollution to execute arbitrary commands within the runner container. Because the polluted prototype is a process-wide object, the corruption persists across other tenants' Code node executions on the same shared runner. On v1.x instances without task runners enabled, Code node JavaScript runs directly in the main n8n process, where the impact could be higher.

CVSS Base Scores

version 3.1