{"id":"JLSEC-2026-558","details":"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.","modified":"2026-07-18T00:02:10.823506503Z","published":"2026-05-26T19:45:06.761Z","upstream":["CVE-2021-44964"],"database_specific":{"license":"CC-BY-4.0","sources":[{"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44964","database_specific":{"status":"Modified"},"id":"CVE-2021-44964","imported":"2026-07-17T22:08:02.945Z","modified":"2026-06-17T04:13:00.373Z","published":"2022-03-14T15:15:09.373Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-44964"}]},"references":[{"type":"WEB","url":"http://lua-users.org/lists/lua-l/2021-11/msg00186.html"},{"type":"WEB","url":"http://lua-users.org/lists/lua-l/2021-12/msg00007.html"},{"type":"WEB","url":"http://lua-users.org/lists/lua-l/2021-12/msg00015.html"},{"type":"WEB","url":"http://lua-users.org/lists/lua-l/2021-12/msg00030.html"},{"type":"WEB","url":"https://github.com/Lua-Project/lua-5.4.4-sandbox-escape-with-new-vulnerability"}],"affected":[{"package":{"name":"Lua_jll","ecosystem":"Julia","purl":"pkg:julia/Lua_jll?uuid=a4086b1d-a96a-5d6b-8e4f-2030e6f25ba6"},"ranges":[{"type":"SEMVER","events":[{"introduced":"5.4.3+0"},{"fixed":"5.4.4+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-558.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V2","score":"AV:N/AC:M/Au:N/C:N/I:N/A:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H"}]}