CVE-2026-40959

Critical

Description

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

SeverityCritical
CVSS9.3
Exploit probability—
ProductLuanti
PublishedApr 16, 2026
First seenApr 16, 2026
Weakness typeCWE-829CWE-829

How to fix

Update
  • Luanti Luanti5.15.2 or later

Affected products

ProductAffected versionsFixed in
Luanti Luanti5.0.0 ≤ v < 5.15.25.15.2

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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