{"items":[{"id":"NVI-00018278","kind":"vulnerability","title":"NodeVM observability builtins leak host process and HTTP request data","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9g8x-92q2-p28f","CVE-2026-47141"],"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-0506c9d0bd87e5228ac88fd4dcf89e00"],"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":[],"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-0506c9d0bd87e5228ac88fd4dcf89e00","url":"https://github.com/advisories/GHSA-9g8x-92q2-p28f","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9g8x-92q2-p28f","publisher":"GitHub Advisory Database","observed_at":"2026-11-06T15:12:54.193Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0506c9d0bd87e5228ac88fd4dcf89e00"],"technology":"vm2","known_exclusions":[],"conditions_summary":"## Summary\n\n`NodeVM` exposes some process-wide observability builtins when they are allowed through `require.builtin`.\n\nThe following builtins are not blocked by the dangerous builtin denylist:\n\n```text\ndiagnostics_channel\nasync_hooks\nperf_hooks\n```\n\nThese modules are process-wide, not sandbox-local. Sandboxed code can use them to observe host application data across the vm2 boundary.\n\n**Note**: It is a host data exposure issue. The impact depends on whether the host application allows these builtins and uses HTTP, async request context, diagnostics channels, or performance marks in the same process.\n\n## Details\n\nNon-denied builtins are exposed to the sandbox through `lib/builtin.js`:\n\n```js\nbuiltins.set(key, special ? special : vm => vm.readonly(hostRequire(key)));\n```\n\n`diagnostics_channel`, `async_hooks`, and `perf_hooks` are not denied. These modules expose host process state rather than sandbox-local state.\n\nConfirmed examples:\n\n1. `diagnostics_channel` lets sandboxed code subscribe to Node.js HTTP diagnostic channels such as `http.server.request.start`. The sandbox receives host HTTP request objects and can read headers such as `Authorization` or session tokens.\n2. `async_hoo","public_affected_ranges":["<= 3.11.3"]}],"null_published_at":"2026-11-07T07:07:39.800Z","source_updated_at":"2026-06-12T19:30:14.000Z","source_disclosed_at":"2026-05-29T18:20:45.000Z","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"}