{"id":"CVE-2026-116811","state":"PUBLISHED","title":"OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template","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.","publishedAt":"2026-10-26T23:05:40.470Z","updatedAt":"2026-10-26T23:05:40.470Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["Openpanel-dev openpanel"],"affected":[{"vendor":"Openpanel-dev","product":"openpanel","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.0.0","versionType":"semver"},{"version":"3.0.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-mc99-9jf5-22cq","https://github.com/Openpanel-dev/openpanel/commit/42fc8623b5c5c30f0b89686451c0c5ab13046b81","https://www.vulncheck.com/advisories/openpanel-before-3.0.0-sandbox-escape-rce-via-webhook-javascript-template"],"weaknesses":["CWE-94"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116811.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116811","state":"PUBLISHED","datePublished":"2026-10-26T23:05:40.470Z","dateUpdated":"2026-10-26T23:05:40.470Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-26T22:13:56.314Z"},"containers":{"cna":{"title":"OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template","descriptions":[{"lang":"en","value":"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":[{"vendor":"Openpanel-dev","product":"openpanel","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.0.0","versionType":"semver"},{"version":"3.0.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-mc99-9jf5-22cq","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-mc99-9jf5-22cq)"},{"url":"https://github.com/Openpanel-dev/openpanel/commit/42fc8623b5c5c30f0b89686451c0c5ab13046b81","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/openpanel-before-3.0.0-sandbox-escape-rce-via-webhook-javascript-template","name":"VulnCheck Advisory: OpenPanel before 3.0.0 Sandbox Escape RCE via Webhook JavaScript Template","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","lang":"en","description":"Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-26T23:05:40.470Z"},"datePublic":"2026-10-11T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:openpanel:openpanel:*:*:*:*:*:*:*:*","versionEndExcluding":"3.0.0"}]}]}],"credits":[{"lang":"en","value":"kemrec","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}