CVE-2026-40960 Security feature bypass in Luanti
A crafted mod can bypass security restrictions to access insecure environments and HTTP APIs in Luanti, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-40960?
CVE-2026-40960 is a high-severity vulnerability in Luanti, published on 16 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Luanti 5 before 5.15.2 sometimes allows unintended access to an insecure environment. If at least one mod is listed as secure.trusted_mods or secure.http_mods, then a crafted mod can intercept the request for the insecure environment or HTTP API, and also receive access to it.
Weakness: CWE-670
Which versions are affected by CVE-2026-40960?
How do I fix CVE-2026-40960?
Upgrade to a fixed version.
Is CVE-2026-40960 being exploited?
There is no known exploitation of CVE-2026-40960 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-40960, GHSA-22c4-238c-m5j4, GHSA-6v58-5584-rv99, UBUNTU-CVE-2026-40960.