CVE-2020-15889

critical

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.

References

Advisories
More

https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312

http://lua-users.org/lists/lua-l/2020-12/msg00157.html

http://lua-users.org/lists/lua-l/2020-07/msg00078.html

Details

Source: Mitre, NVD

Published: 2020-07-21

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00518