GHSA-g6ww-w5j2-r7x3: BoxLite: Permission Bypass Allows Modification of Read-Only Files

BoxLite is a sandbox service that runs untrusted code in lightweight virtual machines (VMs, which are isolated computing environments). It claims to protect host files by mounting directories in read-only mode (preventing writes), but the vulnerability bypasses this: BoxLite tells the underlying VM system (libkrun) to mount directories without actually enforcing read-only restrictions, and it doesn't limit container capabilities (special permissions), so malicious code can remount directories as read-write and modify files that should be protected.