---
id: "CVE-2026-116811"
kind: "vulnerability"
aliases: ["CVE-2026-116811"]
title: "OpenPanel: js-runtime sandbox escape lets project members run code"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["node", "openpanel", "runtime", "self-hosted"]
not_affected_if: ["version-3.0.0-or-later"]
published_at: "2026-10-27T00:17:14+00:00"
first_seen_at: "2026-10-27T00:25:55+00:00"
updated_at: "2026-10-27T00:26:13+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116811", "first_seen_at": "2026-10-27T00:25:55+00:00"}]
---

# OpenPanel: js-runtime sandbox escape lets project members run code

OpenPanel before 3.0.0 has a sandbox escape in its js-runtime validator: the AST allowlist can be bypassed by aliasing the Function constructor. A project member with write access can then run arbitrary code in the worker process.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed OpenPanel version; versions before `3.0.0` are affected.
- unknown for other exposure details; the sources do not say which deployments enable the js-runtime.

## Fix

- Upgrade OpenPanel to `3.0.0` or later.
- unknown for interim mitigations; the sources do not say.

## Timeline

- 2026-10-27T00:25:55+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116811

## From the sources

OpenPanel before 3.0.0 contains a sandbox escape vulnerability in the js-runtime validator that allows a project member to bypass the AST allowlist by aliasing the Function constructor. Attackers with write access can read payload.constructor.constructor into a local and call it to run arbitrary code in the worker process.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_