7.6

CVE-2026-77077

n8n before 1.123.69 Remote Code Execution via EventEmitter Prototype Pollution

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
N8n ≫ N8n SwPlatform node.js Version < 1.123.69
N8n ≫ N8n SwPlatform node.js Version >= 2.33.0 < 2.33.4
N8n ≫ N8n Version 2.34.0 SwPlatform node.js
Zu dieser CVE wurde keine Warnung gefunden.
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.6 2.8 4.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
disclosure@vulncheck.com 7.2 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-94 Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

https://github.com/n8n-io/n8n/security/advisories/GHSA-m3hg-p5r9-fg9h
Vendor Advisory
Mitigation
https://www.vulncheck.com/advisories/n8n-before-remote-code-execution-via-eventemitter-prototype-pollution
Third Party Advisory