---
title: "CVE-2026-116811: OpenPanel - Sandbox Escape"
description: "OpenPanel < 3.0.0 contains a sandbox escape vulnerability caused by aliasing the Function constructor in the js-runtime validator, letting project members with write access execute arbitrary code in the worker process, exploit requires write access."
url: https://panop.io/threat-heartbeat/CVE-2026-116811/
---

# CVE-2026-116811 OpenPanel - Sandbox Escape

OpenPanel < 3.0.0 contains a sandbox escape vulnerability caused by aliasing the Function constructor in the js-runtime validator, letting project members with write access execute arbitrary code in the worker process, exploit requires write access.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-116811)

## Details

Type

Sandbox Escape

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

27 October 2026

Updated

27 October 2026

Weakness

[CWE-94](https://cwe.mitre.org/data/definitions/94.html)

## Vendor fix

Update to version 3.0.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-116811](https://nvd.nist.gov/vuln/detail/CVE-2026-116811)
- [https://github.com/Openpanel-dev/openpanel/commit/42fc8623b5c5c30f0b89686451c0c5ab13046b81](https://github.com/Openpanel-dev/openpanel/commit/42fc8623b5c5c30f0b89686451c0c5ab13046b81)
- [https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-mc99-9jf5-22cq](https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-mc99-9jf5-22cq)
- [https://www.vulncheck.com/advisories/openpanel-before-3.0.0-sandbox-escape-rce-via-webhook-javascript-template](https://www.vulncheck.com/advisories/openpanel-before-3.0.0-sandbox-escape-rce-via-webhook-javascript-template)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)