CVE-2026-41196
Description
Luanti (formerly Minetest) is an open source voxel game-creation platform. Starting in version 5.0.0 and prior to version 5.15.2, a malicious mod can trivially escape the sandboxed Lua environment to execute arbitrary code and gain full filesystem access on the user's device. This applies to the server-side mod, async and mapgen as well as the client-side (CSM) environments. This vulnerability is only exploitable when using LuaJIT. Version 5.15.2 contains a patch. On release versions, one can also patch this issue without recompiling by editing `builtin/init.lua` and adding the line `getfenv = nil` at the end. Note that this will break mods relying on this function (which is not inherently unsafe).
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-41196
Vendor advisory: security-advisories@github.com — https://github.com/luanti-org/luanti/commit/8a929dfb97aa08337f49ba1bb96a56d6557dc896
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | forky | fixed | 5.15.2+dfsg-1 |
| debian | sid | fixed | 5.15.2+dfsg-1 |
| debian | trixie | fixed | 5.10.0+dfsg-5+deb13u1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| minetest | minetest | {"startIncluding":"5.0.0","endExcluding":"5.15.2"} | 5.15.2 |
References
CWEs
CWE-94
Verify integrity in audit chain (admin only). AS-IS.