CVE-2026-40959: Luanti

Critical severity, CVSS 9.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Luanti 5 before 5.15.2, when LuaJIT is used, allows a Lua sandbox escape via a crafted mod.

Affected products

• Luanti Luanti: from 5.0.0, before 5.15.2 (fixed in 5.15.2)

Published 2026-04-16. Last modified 2026-06-17.