What’s Vulnerable › Vulnerabilities

CVE-2020-15889

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-07-21 · updated 2026-06-17
• Weakness: CWE-125

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.

Affected products

• Lua: 5.4.0

References

• http://lua-users.org/lists/lua-l/2020-07/msg00078.html
• http://lua-users.org/lists/lua-l/2020-12/msg00157.html
• https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312
• http://lua-users.org/lists/lua-l/2020-07/msg00078.html
• http://lua-users.org/lists/lua-l/2020-12/msg00157.html
• https://github.com/lua/lua/commit/127e7a6c8942b362aa3c6627f44d660a4fb75312

Get alerted when CVE-2020-15889 or the next vulnerability affects your stack