CVE-2026-116811

OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template

State: Published
Severity: 8.7 High
Published: Oct 26, 2026
Updated: Oct 26, 2026
Reserved: Oct 26, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
openpanelOpenpanel-dev	before 3.0.0Affected 3.0.0Not affected

References

GitHub Security Advisory (GHSA-mc99-9jf5-22cq)vendor-advisory
https://github.com/Openpanel-dev/openpanel/commit/42fc8623b5c5c30f0b89686451c0c5ab13046b81patch
VulnCheck Advisory: OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Templatethird-party-advisory

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