CVE-2025-66479 — Anthropic Sandbox Runtime Incorrectly Implemented Network Sandboxing
Anthropic Sandbox Runtime is a lightweight sandboxing tool for enforcing filesystem and network restrictions on arbitrary processes at the OS level, without requiring a containe…
Published: 2025-12-04 · CVSS: 1.8 · CVSS 4.0
Anthropic Sandbox Runtime is a lightweight sandboxing tool for enforcing filesystem and network restrictions on arbitrary processes at the OS level, without requiring a container. Prior to 0.0.16, due to a bug in sandboxing logic, sandbox-runtime did not properly enforce a network sandbox if the sandbox policy did not configure any allowed domains. This could allow sandboxed code to make network requests outside of the sandbox. A patch for this was released in v0.0.16.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7