{"cve":"CVE-2026-92949","nvd":{"published":"2026-09-17T14:18:00.463","modified":"2026-09-21T18:17:15.850","status":"Deferred","description":"vm2 versions from 3.9.6 before 3.11.7 fail to properly restrict access to accessor properties on frozen objects, allowing sandboxed scripts to bypass vm.freeze() and vm.readonly() protections. Attackers can use Object.getOwnPropertyDescriptor() or __lookupSetter__() to extract and invoke host object setters directly, mutating properties the embedder explicitly marked read-only.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N","score":4.0},"cwes":["CWE-471"],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-633r-hq9m-c4ff","https://www.vulncheck.com/advisories/vm2-3.9.6-before-3.11.7-sandbox-bypass-via-accessor-descriptor","https://github.com/patriksimek/vm2/security/advisories/GHSA-633r-hq9m-c4ff"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-92949","score":0.00319,"percentile":0.24844,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-633r-hq9m-c4ff","url":"https://osv.dev/vulnerability/GHSA-633r-hq9m-c4ff","summary":"vm2: vm.freeze()/vm.readonly() bypass via accessor descriptor","modified":"2026-10-01T15:45:06.739431237Z","packages":[{"ecosystem":"npm","name":"vm2","purl":"pkg:npm/vm2","ranges":[">=3.9.6 <3.11.7"],"fixed":["3.11.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}