{"id":"CVE-2020-15889","aliases":["BIT-lua-2020-15889","DEBIAN-CVE-2020-15889","EUVD-2020-7863","GHSA-j29r-h8wr-v5v8"],"status":"published","title":"Lua through 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c...","description":"Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.02232,"percentile":0.83021,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2020-07-21T21:35:49Z","modified":"2026-10-26T12:00:43Z","fixes":[{"ecosystem":"Bitnami","package":"lua","fixed_in":["5.4.1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"lua5.4","fixed_in":["5.4.0-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"lua5.4","fixed_in":["5.4.0-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"lua5.4","fixed_in":["5.4.0-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"lua","ranges":[{"type":"SEMVER","events":[{"introduced":"5.4.0"},{"fixed":"5.4.1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"lua5.4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"lua5.4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"lua5.4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.0-2"}]}]}],"products":[{"vendor":"lua","product":"lua"}],"references":[{"url":"http://lua-users.org/lists/lua-l/2020-07/msg00078.html","tags":["x_refsource_MISC","x_transferred","Exploit","Mailing List","Third Party Advisory","advisory","evidence"]},{"url":"https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","advisory","fix"]},{"url":"http://lua-users.org/lists/lua-l/2020-12/msg00157.html","tags":["x_refsource_MISC","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15889","tags":["web"]},{"url":"https://github.com/advisories/GHSA-j29r-h8wr-v5v8"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-15889","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-15889","description":"Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.","status":"published","published":"2020-07-21T21:35:49Z","modified":"2024-08-04T13:30:23.249Z","updated_at":"2026-11-02T14:35:49.879248Z"}],"euvd":[{"id":"EUVD-2020-7863","description":"Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.","status":"published","published":"2020-07-21T21:35:49Z","modified":"2024-08-04T13:30:23Z","updated_at":"2026-11-03T03:07:29.843843Z"}],"ghsa":[{"id":"GHSA-j29r-h8wr-v5v8","title":"Lua through 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c...","description":"Lua through 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.","status":"published","published":"2022-05-24T17:24:02Z","modified":"2023-01-29T05:03:23Z","cwes":["CWE-125"],"updated_at":"2026-11-02T14:45:18.510464Z"}],"nvd":[{"id":"CVE-2020-15889","description":"Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list members.","status":"published","published":"2020-07-21T22:15:12.15Z","modified":"2026-06-17T02:57:21.273Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:10.086163Z"}],"osv":[{"id":"CVE-2020-15889","description":"Lua 5.4.0 has a getobjname heap-based buffer over-read because youngcollection in lgc.c uses markold for an insufficient number of list 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members.","status":"published","published":"2024-03-06T10:57:28.905Z","modified":"2026-09-08T08:48:09.135572174Z","updated_at":"2026-11-02T15:28:32.645004Z"}]}}