{"cve":"CVE-2026-71429","nvd":{"published":"2026-09-03T21:17:21.660","modified":"2026-09-09T21:09:13.080","status":"Deferred","description":"stream-json is a micro-library of stream components for processing JSON and JSONC with a minimal memory footprint. Prior to 3.5.0, the path filters pick, ignore, filter, and replace in src/core/filters/filter-base.js recompute the full path string from the nesting stack for every checkable token. Because the stack length equals the current nesting depth and a checkable token is emitted at every level, a depth D document costs O(D²) rather than O(D) to process. The issue is triggered by nesting depth rather than byte volume, including the documented pick({filter: 'data'}) traversal-until-match path, so an application that sends untrusted JSON through a string or RegExp filter can block the Node.js event loop and cause denial of service with a small deeply nested document. The streamArray, streamObject, and streamValues streamers are not affected because they use the constant-time asm.depth getter. This issue is fixed in version 3.5.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.2},"cwes":["CWE-407"],"references":["https://github.com/uhop/stream-json/commit/a869fb98aaef9225556f49901a8f55954ff856e6","https://github.com/uhop/stream-json/security/advisories/GHSA-528h-pc64-c93x","https://github.com/uhop/stream-json/security/advisories/GHSA-528h-pc64-c93x"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:52:03.409947763+00:00"},"epss":{"cve":"CVE-2026-71429","score":0.0016,"percentile":0.05204,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-528h-pc64-c93x","url":"https://osv.dev/vulnerability/GHSA-528h-pc64-c93x","summary":"stream-json: pick/ignore/filter/replace filters are O(depth²) on nested input — small crafted JSON blocks the event loop for seconds→minutes (DoS)","modified":"2026-09-10T03:51:15.101198704Z","packages":[{"ecosystem":"npm","name":"stream-json","purl":"pkg:npm/stream-json","ranges":["<3.5.0"],"fixed":["3.5.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}