CVE-2025-67482 Lua segfault in unpack()
A null pointer dereference in the Lua unpack function allows attackers to cause a denial of service in Wikimedia Scribunto and luasandbox.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-67482?
CVE-2025-67482 is a low-severity vulnerability in Wikimedia Foundation Scribunto, published on 3 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability in Wikimedia Foundation Scribunto, Wikimedia Foundation luasandbox. This vulnerability is associated with program files includes/Engines/LuaCommon/lualib/mwInit.Lua, library.C.
This issue affects Scribunto: from * before 1.39.16, 1.43.6, 1.44.3, 1.45.1; luasandbox: from * before fea2304f8f6ab30314369a612f4f5b165e68e95a.
Which versions are affected by CVE-2025-67482?
How do I fix CVE-2025-67482?
Upgrade to a fixed version.
Is CVE-2025-67482 being exploited?
There is no known exploitation of CVE-2025-67482 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-67482, GHSA-xf8x-crg7-q946, UBUNTU-CVE-2025-67482.