CVE Catalog

CVE-2025-66479

LowCVSS 1.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.16%

5th percentile - higher than 5% of all known CVEs

Summary

Anthropic Sandbox Runtime is a lightweight sandboxing tool for enforcing filesystem and network restrictions on arbitrary processes at the OS level. Prior to 0.0.16, a bug in the sandboxing logic meant that network sandboxing was not properly enforced if the sandbox policy did not configure any allowed domains, allowing sandboxed code to make network requests outside the sandbox. A patch was released in v0.0.16.

Risk Assessment

Code running in the sandbox could communicate over the network in ways that should be blocked, potentially leading to data exfiltration or unauthorized access to network resources.

Recommendation

Update Anthropic Sandbox Runtime to version 0.0.16 or later to ensure proper enforcement of network policies.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS