{"items":[{"id":"NVI-00012981","kind":"vulnerability","title":"vm2: Incomplete nodejs.* symbol filtering lets sandbox override host WebStream state checks","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-jf8q-945g-9q4c","CVE-2026-92952"],"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-09be87f279f10d44c399185a7168b2af"],"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":"2026-10-01T15:42:17.000Z","value":"6.8 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2c7ae109969b5658dceae8af0405a94c"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.461%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.39954. Missing scores are unknown.","source_id":"sr-09be87f279f10d44c399185a7168b2af"}],"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-2c7ae109969b5658dceae8af0405a94c","url":"https://github.com/advisories/GHSA-jf8q-945g-9q4c","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-jf8q-945g-9q4c","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:40:00.567Z"},{"id":"sr-09be87f279f10d44c399185a7168b2af","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-92952","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:29:11.296Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2c7ae109969b5658dceae8af0405a94c"],"technology":"vm2","known_exclusions":[],"conditions_summary":"## Summary\n\nvm2 current head (`v3.11.5`, commit `7a1f5100b96f48d34e0fe104ab37c0acc5944f92`) still exposes registered Node.js internal symbols from host WebStream prototypes to sandbox code.\n\nThe prior `nodejs.*` symbol hardening blocks `Symbol.for('nodejs.')` at the source, but the extraction filters and bridge write traps still enumerate a fixed set of known registered symbols. On Node.js `v25.8.0`, `stream/web` exposes two additional registered symbols:\n\n- `nodejs.stream.disturbed`\n- `nodejs.stream.errored`\n\nSandbox code can extract those real host symbols with `Object.getOwnPropertySymbols(streamWeb.ReadableStream.prototype)` and then use them as write keys on host objects. On a real host `ReadableStream`, an attacker can make `stream.Readable.isDisturbed(stream)` return `false` after the stream has already been read.\n\n## Technical Details\n\n`lib/setup-sandbox.js` correctly blocks future `nodejs.*` keys at the `Symbol.for()` source:\n\n```js\nif (apply(localStringStartsWith, keyStr, ['nodejs.'])) {\n  ...\n  return fresh;\n}\n```\n\nHowever, the extraction filters are still driven by a fixed `realDangerousSymbols` list. That list does not include `nodejs.stream.disturbed` or `nodejs","public_affected_ranges":[">= 3.11.4, <= 3.11.6"]}],"null_published_at":"2026-11-02T20:21:07.839Z","source_updated_at":"2026-10-01T15:42:17.000Z","source_disclosed_at":"2026-10-01T15:42:15.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T01:40:00.567Z"},{"id":"NVI-00012981","kind":"vulnerability","title":"vm2: Incomplete nodejs.* symbol filtering lets sandbox override host WebStream state checks","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-jf8q-945g-9q4c","CVE-2026-92952"],"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-2c7ae109969b5658dceae8af0405a94c"],"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":"2026-10-01T15:42:17.000Z","value":"6.8 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2c7ae109969b5658dceae8af0405a94c"}],"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-2c7ae109969b5658dceae8af0405a94c","url":"https://github.com/advisories/GHSA-jf8q-945g-9q4c","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-jf8q-945g-9q4c","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:40:00.567Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2c7ae109969b5658dceae8af0405a94c"],"technology":"vm2","known_exclusions":[],"conditions_summary":"## Summary\n\nvm2 current head (`v3.11.5`, commit `7a1f5100b96f48d34e0fe104ab37c0acc5944f92`) still exposes registered Node.js internal symbols from host WebStream prototypes to sandbox code.\n\nThe prior `nodejs.*` symbol hardening blocks `Symbol.for('nodejs.')` at the source, but the extraction filters and bridge write traps still enumerate a fixed set of known registered symbols. On Node.js `v25.8.0`, `stream/web` exposes two additional registered symbols:\n\n- `nodejs.stream.disturbed`\n- `nodejs.stream.errored`\n\nSandbox code can extract those real host symbols with `Object.getOwnPropertySymbols(streamWeb.ReadableStream.prototype)` and then use them as write keys on host objects. On a real host `ReadableStream`, an attacker can make `stream.Readable.isDisturbed(stream)` return `false` after the stream has already been read.\n\n## Technical Details\n\n`lib/setup-sandbox.js` correctly blocks future `nodejs.*` keys at the `Symbol.for()` source:\n\n```js\nif (apply(localStringStartsWith, keyStr, ['nodejs.'])) {\n  ...\n  return fresh;\n}\n```\n\nHowever, the extraction filters are still driven by a fixed `realDangerousSymbols` list. That list does not include `nodejs.stream.disturbed` or `nodejs","public_affected_ranges":[">= 3.11.4, <= 3.11.6"]}],"null_published_at":"2026-11-01T07:29:12.906Z","source_updated_at":"2026-10-01T15:42:17.000Z","source_disclosed_at":"2026-10-01T15:42:15.000Z","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"}