{"id":"EUVD-2026-95107","revision":"aabc134239584b2cbd8eed2a132be192","records":[{"revision":"aabc134239584b2cbd8eed2a132be192","observedAt":"2026-11-01T02:10:14.851+00:00","statement":{"source":"euvd","id":"EUVD-2026-95107","aliases":["CVE-2026-107296","GHSA-qw35-55vc-rhgj"],"title":"msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, decoding a negative signed 64-bit integer modifies the corresponding bytes in the caller-provided input buffer while computing the value. Applications that…","description":"msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, decoding a negative signed 64-bit integer modifies the corresponding bytes in the caller-provided input buffer while computing the value. Applications that retain or reuse encoded input for integrity checks, logging, or later processing can observe silently corrupted data, while positive integers and other MessagePack value types are unaffected. This issue is fixed in version 6.1.0.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","score":3.7,"severity":null}],"references":["https://github.com/mcollina/msgpack5/security/advisories/GHSA-qw35-55vc-rhgj","https://github.com/mcollina/msgpack5/commit/82b70393a824e1088a45a377548d1d9ab82faf91","https://github.com/mcollina/msgpack5/releases/tag/v6.1.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95107","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 8, 2026, 5:05:34 PM","dateUpdated":"Oct 14, 2026, 1:01:55 AM"},"relatedAdvisories":[{"id":"msrc_CVE-2026-107296","title":"msgpack5: Decoding negative int64 values mutates the input buffer","vulnerabilityIds":["CVE-2026-107296"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-95107","identifiers":["EUVD-2026-95107","CVE-2026-107296","GHSA-qw35-55vc-rhgj"]},"retained":false,"historicalAffected":[]}],"coverage":[]}