{"items":[{"id":"NVI-00018359","kind":"vulnerability","title":"NodeVM network builtin exclusions bypass via internal _http_client and _http_server","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r9pm-gxmw-wv6p","CVE-2026-47139"],"plain_summary":"GitHub lists this reviewed advisory for vm2. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1624a1506f2b362294769b6c7b2bf4d2"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-12T19:30:12.000Z","value":"8.6 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1624a1506f2b362294769b6c7b2bf4d2"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1624a1506f2b362294769b6c7b2bf4d2","url":"https://github.com/advisories/GHSA-r9pm-gxmw-wv6p","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r9pm-gxmw-wv6p","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T15:12:54.193Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1624a1506f2b362294769b6c7b2bf4d2"],"technology":"vm2","known_exclusions":[],"conditions_summary":"## Summary\n\n`NodeVM` supports excluding public network builtins from the wildcard builtin option. With this configuration direct access to `http`, `https`, `http2`, `net`, `dgram`, `tls`, `dns`, and `dns/promises` is blocked.\n\nHowever, Node.js also exposes underscored internal HTTP builtins such as `_http_client` and `_http_server`. These are not blocked when the public modules are excluded.\n\nSandboxed code can use these internal builtins to make outbound HTTP requests and open listening HTTP sockets even though the public network modules are denied.\n\n**Note**: This is not host RCE. It is a network capability bypass that can lead to SSRF-style access to internal services.\n\n## Details\n\nThe wildcard builtin expansion is based on Node.js builtin module names:\n\n```js\nconst BUILTIN_MODULES = (nmod.builtinModules || Object.getOwnPropertyNames(process.binding('natives')))\n  .filter(s=>!s.startsWith('internal/') && !DANGEROUS_BUILTINS.has(s));\n```\n\nPublic modules can be excluded with `-name`:\n\n```js\nif (builtins.indexOf(`-${name}`) === -1) {\n  addDefaultBuiltin(res, name, hostRequire);\n}\n```\n\nBut excluding `http` and `net` does not exclude internal siblings such as:\n\n```text\n_http_client\n_","public_affected_ranges":["<= 3.11.3"]}],"null_published_at":"2026-11-07T07:07:39.823Z","source_updated_at":"2026-06-12T19:30:12.000Z","source_disclosed_at":"2026-05-29T18:08:06.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-06T15:12:54.193Z"}],"next_cursor":null,"snapshot_revision":"42594"}