Anthropic Sandbox Runtime Incorrectly Implemented Network Sandboxing_CVE-2025-66479

1.8 / 10

LOW

CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Description

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.

Basic Information

ID CVE-2025-66479

Source GitHub_M

Published Dec 4, 2025 at 20:57

Affected Product

Vendor anthropic-experimental

Product sandbox-runtime

Version < 0.0.16

Affected Versions anthropic-experimental sandbox-runtime < 0.0.16

CWE Classification

CWE-693

References

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    "published": "2025-12-04T20:57:20.631Z",
    "modified": "2025-12-04T20:57:20.631Z",
    "type": "cve",
    "title": "Anthropic Sandbox Runtime Incorrectly Implemented Network Sandboxing",
    "source": "GitHub_M",
    "references": "https://github.com/anthropic-experimental/sandbox-runtime/security/advisories/GHSA-9gqj-5w7c-vx47\nhttps://github.com/anthropic-experimental/sandbox-runtime/commit/bea2930cc1db9c73a1b15acf6dc19c5261aec1f3",
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