{"cve":"CVE-2021-44964","nvd":{"published":"2022-03-14T15:15:09.373","modified":"2026-06-17T04:13:00.373","status":"Modified","description":"Use after free in garbage collector and finalizer of lgc.c in Lua interpreter 5.4.0~5.4.3 allows attackers to perform Sandbox Escape via a crafted script file.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H","score":6.3},"cwes":["CWE-416"],"references":["http://lua-users.org/lists/lua-l/2021-11/msg00186.html","http://lua-users.org/lists/lua-l/2021-12/msg00007.html","http://lua-users.org/lists/lua-l/2021-12/msg00015.html","http://lua-users.org/lists/lua-l/2021-12/msg00030.html","https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerability"],"products":["lua:lua"],"source":"nvd","synced_at":"2026-10-19T21:29:06.454770966+00:00"},"epss":{"cve":"CVE-2021-44964","score":0.00985,"percentile":0.62382,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}