What’s Vulnerable › Vulnerabilities

CVE-2026-40959

• Severity: critical (CVSS 9.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-16 · updated 2026-06-17
• Weakness: CWE-829

Description

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

Affected products

• Luanti: from 5.0.0 before 5.15.2 — fixed in 5.15.2

How to fix

Upgrade to a fixed version: Luanti 5.15.2. Check the vendor advisory for mitigations.

References

• https://github.com/luanti-org/luanti/commit/53cef183e2a85a4daff84ac1a9a7946f940da8f8
• https://github.com/luanti-org/luanti/commit/8a929dfb97aa08337f49ba1bb96a56d6557dc896
• https://github.com/luanti-org/luanti/security/advisories/GHSA-g596-mf82-w8c3

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