{"id":"CVE-2025-66479","summary":"Anthropic Sandbox Runtime Incorrectly Implemented Network Sandboxing","details":"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.","aliases":["GHSA-9gqj-5w7c-vx47"],"modified":"2026-09-08T03:45:38.041087948Z","published":"2025-12-04T20:57:20.631Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66479.json","unresolved_ranges":[{"extracted_events":[{"fixed":"0.0.16"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"GitHub_M","cwe_ids":["CWE-693"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66479.json"},{"type":"ADVISORY","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":"FIX","url":"https://github.com/anthropic-experimental/sandbox-runtime/commit/bea2930cc1db9c73a1b15acf6dc19c5261aec1f3"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/anthropics/sandbox-runtime","events":[{"introduced":"0"},{"fixed":"bea2930cc1db9c73a1b15acf6dc19c5261aec1f3"}],"database_specific":{"source":"REFERENCES"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66479.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}