CVE-2026-0863

Katalog CVE

CVSS 9.9 · Critical EPSS 9,4%

Kerentanan Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') pada n8n. Skor CVSS 3.1 9.9 (Critical) menurut NVD.

Deskripsi (NVD)

Using string formatting and exception handling, an attacker may bypass n8n's python-task-executor sandbox restrictions and run arbitrary unrestricted Python code in the underlying operating system. The vulnerability can be exploited via the Code block by an authenticated user with basic permissions and can lead to a full n8n instance takeover on instances operating under "Internal" execution mode. If the instance is operating under the "External" execution mode (ex. n8n's official Docker image) - arbitrary code execution occurs inside a Sidecar container and not the main node, which significantly reduces the vulnerability impact.

Rincian

Terbit di NVD

18 Januari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
CWE-94: Improper Control of Generation of Code ('Code Injection')

EPSS (30 hari)

9,4% peluang dieksploitasi; lebih tinggi dari 95,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/n8n-io/n8n/commit/b73a4283cb14e0f27ce19692326f362c7bf3da02 patch
• https://research.jfrog.com/vulnerabilities/n8n-python-runner-sandbox-escape-jfsa-2026-001651077/ exploit · advisory pihak ketiga
• https://www.smartkeyss.com/post/cve-2026-0863-python-sandbox-escape-in-n8n-via-exception-formatting-and-implic... exploit · advisory pihak ketiga