Vulnerability · Published Oct 26, 2026 · Assigned by VulnCheck
CVE-2026-116811OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template
High 8.8
In plain English
A high-severity code injection in openpanel from Openpanel-dev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.5%top 57.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Openpanel-dev | openpanel | 0 – before 3.0.0 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H