{"items":[{"id":"NVI-00013827","kind":"vulnerability","title":"qs: Denial of Service via Attacker Controlled isBuffer","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4mjr-xmp4-gh2g","CVE-2026-82417"],"plain_summary":"GitHub lists this reviewed advisory for qs. 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-07de6e75445fc1a457176f8bf5564ce2"],"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":"2026-09-02T14:45:15.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0bb7bbf925e4dab70e9102c0c1dabc44"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.396%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.338. Missing scores are unknown.","source_id":"sr-07de6e75445fc1a457176f8bf5564ce2"}],"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-0bb7bbf925e4dab70e9102c0c1dabc44","url":"https://github.com/advisories/GHSA-4mjr-xmp4-gh2g","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4mjr-xmp4-gh2g","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:21:43.711Z"},{"id":"sr-07de6e75445fc1a457176f8bf5564ce2","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-2026-82417","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:17:01.143Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0bb7bbf925e4dab70e9102c0c1dabc44"],"technology":"qs","known_exclusions":[],"conditions_summary":"### Summary\n\n`qs.stringify()` calls `utils.isBuffer()` on every value it serializes, and `utils.isBuffer()` invokes `obj.constructor.isBuffer(obj)` without checking that it is callable. A value whose own `constructor.isBuffer` is a non-function makes `qs` call a non-callable and throw `TypeError`. Such a value is produced **by `qs.parse` itself** from an untrusted query string when `plainObjects: true` or `allowPrototypes: true` is set, so a pure-`qs` `parse` → `stringify` round-trip — no `JSON.parse` — turns an unauthenticated query string into an uncaught throw.\n\nAn attacker-controlled `parse` input reaches the host application's availability asset — via `qs`'s own recommended `plainObjects` mitigation — and triggers an uncaught exception during a `parse` → `stringify` round-trip.\n\n### Details\n`utils.isBuffer` runs at `lib/stringify.js:127` for every serialized value:\n\n```js\nif (isNonNullishPrimitive(obj) || utils.isBuffer(obj)) { ... }\n```\n\n`utils.isBuffer` (`lib/utils.js:327-333`) invokes `obj.constructor.isBuffer` without verifying it is callable:\n\n```js\nvar isBuffer = function isBuffer(obj) {\n    if (!obj || typeof obj !== 'object') { return false; }\n    return !!(obj.constru","public_affected_ranges":[">= 2.2.5, < 6.16.0"]}],"null_published_at":"2026-11-03T17:49:15.020Z","source_updated_at":"2026-09-02T14:45:15.000Z","source_disclosed_at":"2026-09-02T14:45:13.000Z","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":"2026-11-02T02:21:43.711Z"},{"id":"NVI-00013827","kind":"vulnerability","title":"qs: Denial of Service via Attacker Controlled isBuffer","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4mjr-xmp4-gh2g","CVE-2026-82417"],"plain_summary":"GitHub lists this reviewed advisory for qs. 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-0bb7bbf925e4dab70e9102c0c1dabc44"],"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":"2026-09-02T14:45:15.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0bb7bbf925e4dab70e9102c0c1dabc44"}],"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-0bb7bbf925e4dab70e9102c0c1dabc44","url":"https://github.com/advisories/GHSA-4mjr-xmp4-gh2g","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4mjr-xmp4-gh2g","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:21:43.711Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0bb7bbf925e4dab70e9102c0c1dabc44"],"technology":"qs","known_exclusions":[],"conditions_summary":"### Summary\n\n`qs.stringify()` calls `utils.isBuffer()` on every value it serializes, and `utils.isBuffer()` invokes `obj.constructor.isBuffer(obj)` without checking that it is callable. A value whose own `constructor.isBuffer` is a non-function makes `qs` call a non-callable and throw `TypeError`. Such a value is produced **by `qs.parse` itself** from an untrusted query string when `plainObjects: true` or `allowPrototypes: true` is set, so a pure-`qs` `parse` → `stringify` round-trip — no `JSON.parse` — turns an unauthenticated query string into an uncaught throw.\n\nAn attacker-controlled `parse` input reaches the host application's availability asset — via `qs`'s own recommended `plainObjects` mitigation — and triggers an uncaught exception during a `parse` → `stringify` round-trip.\n\n### Details\n`utils.isBuffer` runs at `lib/stringify.js:127` for every serialized value:\n\n```js\nif (isNonNullishPrimitive(obj) || utils.isBuffer(obj)) { ... }\n```\n\n`utils.isBuffer` (`lib/utils.js:327-333`) invokes `obj.constructor.isBuffer` without verifying it is callable:\n\n```js\nvar isBuffer = function isBuffer(obj) {\n    if (!obj || typeof obj !== 'object') { return false; }\n    return !!(obj.constru","public_affected_ranges":[">= 2.2.5, < 6.16.0"]}],"null_published_at":"2026-11-02T10:00:37.156Z","source_updated_at":"2026-09-02T14:45:15.000Z","source_disclosed_at":"2026-09-02T14:45:13.000Z","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":"2026-11-02T02:21:43.711Z"}],"next_cursor":null,"snapshot_revision":"42594"}