{"items":[{"id":"NVI-00012915","kind":"vulnerability","title":"vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-6rh5-qq4q-97xh","CVE-2026-92958"],"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-2d3d2c31e87e1402a5935c3419accd6c"],"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":"2026-10-01T15:36:49.000Z","value":"8.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-08527a2362fac2414f481db6089a0440"},{"kind":"CVSS","as_of":"2026-09-18T20:17:31.243Z","value":"8.5 HIGH (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-2d3d2c31e87e1402a5935c3419accd6c"},{"kind":"CVSS","as_of":"2026-09-18T20:17:31.243Z","value":"8.4 HIGH (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-2d3d2c31e87e1402a5935c3419accd6c"}],"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-08527a2362fac2414f481db6089a0440","url":"https://github.com/advisories/GHSA-6rh5-qq4q-97xh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-6rh5-qq4q-97xh","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:40:00.567Z"},{"id":"sr-2d3d2c31e87e1402a5935c3419accd6c","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92958","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-92958","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:59:50.242Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-08527a2362fac2414f481db6089a0440"],"technology":"vm2","known_exclusions":[],"conditions_summary":"## Summary\n\nNodeVM's builtin wildcard policy can allow sandboxed code to access `fs/promises` even when the embedder denies `fs`.\n\nWith the following configuration:\n\n```js\nrequire: {\n  builtin: ['*', '-fs', '-child_process']\n}\n```\n\n`require('fs')` and `require('child_process')` are blocked, but `require('fs/promises')` and `require('node:fs/promises')` are still available. This allows sandboxed code to create and write files on the host filesystem through the promise-based filesystem API.\n\n## Affected Mode\n\nNodeVM.\n\n## Affected Configuration\n\n```js\nnew NodeVM({\n  require: {\n    builtin: ['*', '-fs', '-child_process']\n  }\n});\n```\n\nThis affects configurations where users rely on negative builtin entries such as `-fs` to deny filesystem access while using the `'*'` builtin wildcard.\n\n## Affected Files / Functions\n\n- `lib/builtin.js`\n  - `DANGEROUS_BUILTINS`\n  - `BUILTIN_MODULES`\n  - `makeBuiltinsFromLegacyOptions`\n  - `addDefaultBuiltin`\n- `lib/resolver.js`\n  - `Resolver.resolve`\n  - `Resolver.loadBuiltinModule`\n- `lib/setup-node-sandbox.js`\n  - `requireImpl`\n\n## Root Cause\n\n`lib/builtin.js` builds `BUILTIN_MODULES` from Node's builtin module list and filters dangerous/default-denied ","public_affected_ranges":["<= 3.11.6"]}],"null_published_at":"2026-11-04T10:04:35.926Z","source_updated_at":"2026-10-01T15:36:49.000Z","source_disclosed_at":"2026-10-01T15:36:48.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T01:40:00.567Z"},{"id":"NVI-00012915","kind":"vulnerability","title":"vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-6rh5-qq4q-97xh","CVE-2026-92958"],"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-08527a2362fac2414f481db6089a0440"],"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":"2026-10-01T15:36:49.000Z","value":"8.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-08527a2362fac2414f481db6089a0440"}],"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-08527a2362fac2414f481db6089a0440","url":"https://github.com/advisories/GHSA-6rh5-qq4q-97xh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-6rh5-qq4q-97xh","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:40:00.567Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-08527a2362fac2414f481db6089a0440"],"technology":"vm2","known_exclusions":[],"conditions_summary":"## Summary\n\nNodeVM's builtin wildcard policy can allow sandboxed code to access `fs/promises` even when the embedder denies `fs`.\n\nWith the following configuration:\n\n```js\nrequire: {\n  builtin: ['*', '-fs', '-child_process']\n}\n```\n\n`require('fs')` and `require('child_process')` are blocked, but `require('fs/promises')` and `require('node:fs/promises')` are still available. This allows sandboxed code to create and write files on the host filesystem through the promise-based filesystem API.\n\n## Affected Mode\n\nNodeVM.\n\n## Affected Configuration\n\n```js\nnew NodeVM({\n  require: {\n    builtin: ['*', '-fs', '-child_process']\n  }\n});\n```\n\nThis affects configurations where users rely on negative builtin entries such as `-fs` to deny filesystem access while using the `'*'` builtin wildcard.\n\n## Affected Files / Functions\n\n- `lib/builtin.js`\n  - `DANGEROUS_BUILTINS`\n  - `BUILTIN_MODULES`\n  - `makeBuiltinsFromLegacyOptions`\n  - `addDefaultBuiltin`\n- `lib/resolver.js`\n  - `Resolver.resolve`\n  - `Resolver.loadBuiltinModule`\n- `lib/setup-node-sandbox.js`\n  - `requireImpl`\n\n## Root Cause\n\n`lib/builtin.js` builds `BUILTIN_MODULES` from Node's builtin module list and filters dangerous/default-denied ","public_affected_ranges":["<= 3.11.6"]}],"null_published_at":"2026-11-01T07:29:12.901Z","source_updated_at":"2026-10-01T15:36:49.000Z","source_disclosed_at":"2026-10-01T15:36:48.000Z","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":"2026-11-01T01:40:00.567Z"}],"next_cursor":null,"snapshot_revision":"42594"}