{"id":"CVE-2026-116811","title":"OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template","summary":"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.constr…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-94"],"vendor":"Openpanel-dev","product":"openpanel","affected":["openpanel < 3.0.0"],"published":"2026-10-26","updated":"2026-10-26","sourceUpdated":"2026-10-26T23:05:40.470Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116811","references":[{"url":"https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-mc99-9jf5-22cq","label":"GitHub Security Advisory (GHSA-mc99-9jf5-22cq)"},{"url":"https://github.com/Openpanel-dev/openpanel/commit/42fc8623b5c5c30f0b89686451c0c5ab13046b81"},{"url":"https://www.vulncheck.com/advisories/openpanel-before-3.0.0-sandbox-escape-rce-via-webhook-javascript-template","label":"VulnCheck Advisory: OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template"}],"tags":["cve.org"],"epss":0.00494,"epssPercentile":0.42185,"ingestedAt":"2026-10-27T16:11:59.143Z","slug":"CVE-2026-116811","body":"## Overview\n\nOpenPanel 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.\n\n## Affected\n\n- `openpanel < 3.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}