Luanti has a mod security sandbox escape_CVE-2026-41196

9 / 10

CRITICAL

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

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).

AI Analysis

A malicious mod can escape the sandboxed Lua environment to execute arbitrary code and gain full filesystem access on the user's device.

Basic Information

ID CVE-2026-41196

Source GitHub_M

Published Apr 23, 2026 at 00:28

Affected Product

Vendor luanti-org

Product luanti

Version >= 5.0.0, < 5.15.2

Affected Versions luanti-org luanti >= 5.0.0, < 5.15.2

CWE Classification

CWE-94

AI Assessment

AI Score 9 / 10

AI Severity Critical

Vendor luanti-org

Product Luanti

Version 5.0.0 to 5.15.2

References

{
    "lastseen": "",
    "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).",
    "published": "2026-04-23T00:28:56.716Z",
    "modified": "2026-04-23T00:28:56.716Z",
    "type": "cve",
    "title": "Luanti has a mod security sandbox escape",
    "source": "GitHub_M",
    "references": "https://github.com/luanti-org/luanti/security/advisories/GHSA-g596-mf82-w8c3\nhttps://github.com/luanti-org/luanti/commit/8a929dfb97aa08337f49ba1bb96a56d6557dc896",
    "id": "CVE-2026-41196",
    "bulletinFamily": "",
    "cwe": [
        "CWE-94"
    ],
    "cvelist": null,
    "sourceData": "luanti-org luanti >= 5.0.0, < 5.15.2",
    "sourceHref": "",
    "cvss": {
        "score": 9,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "luanti",
    "version": ">= 5.0.0, < 5.15.2",
    "vendor": "luanti-org",
    "ai_description": "A malicious mod can escape the sandboxed Lua environment to execute arbitrary code and gain full filesystem access on the user's device.",
    "ai_severity": "Critical",
    "ai_vendor": "luanti-org",
    "ai_product": "Luanti",
    "ai_version": "5.0.0 to 5.15.2",
    "ai_score": 9
}