CVE-2026-77077

Katalog CVE

CVSS 7.6 · High EPSS 0,56%

Kerentanan Improper Control of Generation of Code ('Code Injection') pada n8n. Skor CVSS 3.1 7.6 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

20 Agustus 2026

Terakhir diubah

1 September 2026

Status NVD

Analyzed

CVSS 3.1

7.6 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-94: Improper Control of Generation of Code ('Code Injection')

EPSS (30 hari)

0,56% peluang dieksploitasi; lebih tinggi dari 45,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/n8n-io/n8n/security/advisories/GHSA-m3hg-p5r9-fg9h mitigasi · advisory vendor
• https://www.vulncheck.com/advisories/n8n-before-remote-code-execution-via-eventemitter-prototype-pollution advisory pihak ketiga