Enclave is a secure JavaScript sandbox designed for safe AI agent code execution. Prior to 2.7.0, there is a critical sandbox escape vulnerability in enclave-vm that allows untrusted, sandboxed JavaScript code to execute arbitrary code in the host Node.js runtime. When a tool invocation fails, enclave-vm exposes a host-side Error object to sandboxed code. This Error object retains its host realm prototype chain, which can be traversed to reach the host Function constructor. An attacker can intentionally trigger a host error, then climb the prototype chain. Using the host Function constructor, arbitrary JavaScript can be compiled and executed in the host context, fully bypassing the sandbox and granting access to sensitive resources such as process.env, filesystem, and network. This breaks enclave-vm’s core security guarantee of isolating untrusted code. This vulnerability is fixed in 2.7.0.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-7qm7-455j-5p63 enclave-vm Vulnerable to Sandbox Escape via Host Error Prototype Chain
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 14 Jan 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 14 Jan 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Agentfront
Agentfront enclave
Vendors & Products Agentfront
Agentfront enclave

Tue, 13 Jan 2026 23:30:00 +0000

Type Values Removed Values Added
Description Enclave is a secure JavaScript sandbox designed for safe AI agent code execution. Prior to 2.7.0, there is a critical sandbox escape vulnerability in enclave-vm that allows untrusted, sandboxed JavaScript code to execute arbitrary code in the host Node.js runtime. When a tool invocation fails, enclave-vm exposes a host-side Error object to sandboxed code. This Error object retains its host realm prototype chain, which can be traversed to reach the host Function constructor. An attacker can intentionally trigger a host error, then climb the prototype chain. Using the host Function constructor, arbitrary JavaScript can be compiled and executed in the host context, fully bypassing the sandbox and granting access to sensitive resources such as process.env, filesystem, and network. This breaks enclave-vm’s core security guarantee of isolating untrusted code. This vulnerability is fixed in 2.7.0.
Title Sandbox Escape via Host Error Prototype Chain in enclave-vm
Weaknesses CWE-693
CWE-94
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-01-14T14:33:18.579Z

Reserved: 2026-01-08T19:23:09.854Z

Link: CVE-2026-22686

cve-icon Vulnrichment

Updated: 2026-01-14T14:33:09.645Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-14T00:15:49.957

Modified: 2026-01-14T16:25:12.057

Link: CVE-2026-22686

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-14T10:49:10Z

Weaknesses