GHSA-9GQJ-5W7C-VX47

Vulnerability from github – Published: 2025-12-04 16:55 – Updated: 2025-12-04 22:50
VLAI?
Summary
Anthropic Sandbox Runtime Incorrectly Implemented Network Sandboxing
Details

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.

Thank you to https://github.com/bendrucker for reporting this issue!

Severity ?
1.8 (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
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@anthropic-ai/sandbox-runtime"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-66479"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-693"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-04T16:55:06Z",
    "nvd_published_at": "2025-12-04T21:16:09Z",
    "severity": "LOW"
  },
  "details": "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. \n\nThank you to https://github.com/bendrucker for reporting this issue!",
  "id": "GHSA-9gqj-5w7c-vx47",
  "modified": "2025-12-04T22:50:11Z",
  "published": "2025-12-04T16:55:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/anthropic-experimental/sandbox-runtime/security/advisories/GHSA-9gqj-5w7c-vx47"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66479"
    },
    {
      "type": "WEB",
      "url": "https://github.com/anthropic-experimental/sandbox-runtime/commit/bea2930cc1db9c73a1b15acf6dc19c5261aec1f3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/anthropic-experimental/sandbox-runtime"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Anthropic Sandbox Runtime Incorrectly Implemented Network Sandboxing "
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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