CVE-2021-44964

6.3 mediumEPSS 1.0%

Medium (6.3) in lua lua. EPSS 1.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.3 medium

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

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
CWE: CWE-416
Published: 2022-03-14
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

lua:lua

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

Check your stack JSON