CVE-2026-0863 - Sandbox escape in n8n Python task runner allows for arbitrary code execution on t...

CVE ID : CVE-2026-0863 Published : Jan. 18, 2026, 4:15 p.m. | 1 hour, 10 minutes ago Description : 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