Critical severity · published Apr 16, 2026
CVE-2026-40959
Luanti 5 before 5.15.2, when LuaJIT is used, allows a Lua sandbox escape via a crafted mod
9.3
CVSS
0.2%
EPSS
No
On KEV
Description
Luanti 5 before 5.15.2, when LuaJIT is used, allows a Lua sandbox escape via a crafted mod.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LU
Luanti · Luanti
5.0.0 before 5.15.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40959
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-40959
github.com
https://github.com/luanti-org/luanti/commit/53cef183e2a85a4daff84ac1a9a7946f940da8f8
github.com
https://github.com/luanti-org/luanti/commit/8a929dfb97aa08337f49ba1bb96a56d6557dc896
github.com
https://github.com/luanti-org/luanti/security/advisories/GHSA-g596-mf82-w8c3
More from Luanti
8.1
CVE-2026-40960
Luanti 5 before 5.15.2 sometimes allows unintended access to an insecure environment