CVE-2020-15888

Lua through 5.4.0 mishandles the interaction between stack resizes and garbage collection, leading to a heap-based buffer overflow, heap-based buffer over-read, or use-after-free.

• CWE-125
• CWE-416
• CWE-787

• http://lua-users.org/lists/lua-l/2020-07/msg00053.htmlExploit, Mailing List, Third Party Advisory
• http://lua-users.org/lists/lua-l/2020-07/msg00054.htmlExploit, Mailing List, Third Party Advisory
• http://lua-users.org/lists/lua-l/2020-07/msg00071.htmlExploit, Mailing List, Third Party Advisory
• http://lua-users.org/lists/lua-l/2020-07/msg00079.htmlExploit, Mailing List, Third Party Advisory
• https://github.com/lua/lua/commit/6298903e35217ab69c279056f925fb72900ce0b7Patch, Third Party Advisory
• https://github.com/lua/lua/commit/eb41999461b6f428186c55abd95f4ce1a76217d5Patch, Third Party Advisory
• http://lua-users.org/lists/lua-l/2020-07/msg00053.htmlExploit, Mailing List, Third Party Advisory
• http://lua-users.org/lists/lua-l/2020-07/msg00054.htmlExploit, Mailing List, Third Party Advisory
• http://lua-users.org/lists/lua-l/2020-07/msg00071.htmlExploit, Mailing List, Third Party Advisory
• http://lua-users.org/lists/lua-l/2020-07/msg00079.htmlExploit, Mailing List, Third Party Advisory
• https://github.com/lua/lua/commit/6298903e35217ab69c279056f925fb72900ce0b7Patch, Third Party Advisory
• https://github.com/lua/lua/commit/eb41999461b6f428186c55abd95f4ce1a76217d5Patch, Third Party Advisory

Published

Jul 21, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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