{"id":"CVE-2026-107297","revision":"fae0421c027542c0ba556e3de127be1a","records":[{"revision":"fae0421c027542c0ba556e3de127be1a","observedAt":"2026-10-25T04:17:41.466+00:00","statement":{"source":"nvd","id":"CVE-2026-107297","aliases":[],"title":"msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder reparses an incomplete array or map from the beginning whenever another chunk arrives. A remote peer can split one valid MessagePack …","description":"msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder reparses an incomplete array or map from the beginning whenever another chunk arrives. A remote peer can split one valid MessagePack container across many small chunks, causing completed elements to be decoded repeatedly, producing quadratic CPU use and blocking the event loop. This issue is fixed in version 6.1.0.","state":0,"publishedAt":"2026-10-08T17:17:15.55+00:00","modifiedAt":"2026-10-08T20:48:36.97+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/mcollina/msgpack5/commit/e4827641d3105e295cbbd56e9c5389978547eab4","https://github.com/mcollina/msgpack5/releases/tag/v6.1.0","https://github.com/mcollina/msgpack5/security/advisories/GHSA-gcx5-hxj7-gpqq"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107297","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-407"],"productCriteria":[],"sourceDates":{"published":"2026-10-08T17:17:15.550","lastModified":"2026-10-08T20:48:36.970"},"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-2026-107297","identifiers":["CVE-2026-107297"]},"retained":false,"historicalAffected":[]}],"coverage":[]}