PT-2026-34594 · Luanti · Luanti

Published 2026-04-23 · Updated 2026-05-14 · CVE-2026-41196

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Luanti versions 5.0.0 through 5.15.1

Description A malicious mod can escape the sandboxed Lua environment to execute arbitrary code and gain full filesystem access on the user's device. This issue affects server-side mods, async, mapgen, and client-side (CSM) environments, and is only exploitable when using LuaJIT (a Just-In-Time compiler for the Lua programming language).

Recommendations Update to version 5.15.2. As a temporary workaround for release versions, edit builtin/init.lua and add the line getfenv = nil at the end, though this may break mods relying on the getfenv() function.

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-41196

Affected Products

Luanti

References · 10

• https://github.com/luanti-org/luanti/commit/8a929dfb97aa08337f49ba1bb96a56d6557dc896 · Patch
• https://ubuntu.com/security/CVE-2026-41196 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-41196 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-41196 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-41196 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-41196 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41196 · Security Note
• https://github.com/luanti-org/luanti/security/advisories/GHSA-g596-mf82-w8c3 · Note
• https://t.me/cveNotify/163472 · Telegram Post
• https://twitter.com/CVEnew/status/2047359903115681828 · Twitter Post