{"id":"CVE-2026-40879","revision":"40c37e37fb9c416688836e2367c598f1","records":[{"revision":"40c37e37fb9c416688836e2367c598f1","observedAt":"2026-10-27T10:10:07.342+00:00","statement":{"source":"nvd","id":"CVE-2026-40879","aliases":[],"title":"Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. max…","description":"Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.","state":0,"publishedAt":"2026-04-21T20:17:01.533+00:00","modifiedAt":"2026-10-26T21:10:00.17+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/nestjs/nest/security/advisories/GHSA-hpwf-8g29-85qm"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-40879","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-674"],"productCriteria":["cpe:2.3:a:nestjs:nest:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-04-21T20:17:01.533","lastModified":"2026-10-26T21:10:00.170"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-40879","identifiers":["CVE-2026-40879"]},"retained":false,"historicalAffected":[]}],"coverage":[]}