CVE-2025-66479: Anthropic Sandbox Runtime is a lightweight sandboxing tool for enforcing filesystem and network restrictions on arbitrar

Anthropic Sandbox Runtime is a tool that restricts what processes can access on a computer's filesystem (file storage) and network without needing containers (isolated computing environments). Before version 0.0.16, a bug prevented the network sandbox from working correctly when no allowed domains were specified, which could let code inside the sandbox make network requests it shouldn't be able to make.