Threat database

CVE-2026-22686 is a critical sandbox escape vulnerability in the agentfront enclave JavaScript sandbox prior to version 2.7.0. It allows untrusted sandboxed JavaScript code to execute arbitrary code in the host Node.js runtime by exploiting the exposure of a host-side Error object and traversing its prototype chain to reach the host Function constructor. This enables attackers to bypass the sandbox isolation, gaining access to sensitive host resources such as environment variables, filesystem, and network. The vulnerability has a CVSS score of 10, indicating critical severity with no authentication or user interaction required. It is fixed in enclave version 2.7.0.