{"id":"CVE-2026-107298","title":"msgpack5 is a msgpack v5 implementation for node.js and the browser","summary":"msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the array and map decoding paths have no nesting-depth limit, allowing an attacker who can provide MessagePack input to submit deeply nested containers …","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-674"],"vendor":"msgpack5","product":"msgpack5","affected":["msgpack5 < 6.1.0"],"patched":["msgpack5 6.1.0"],"published":"2026-10-08","updated":"2026-10-08","sourceUpdated":"2026-10-08T20:48:36.970","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107298","references":[{"url":"https://github.com/mcollina/msgpack5/commit/1e2b5874e555dd7c99417f64788a03b0590bb102","label":"security-advisories@github.com"},{"url":"https://github.com/mcollina/msgpack5/releases/tag/v6.1.0","label":"security-advisories@github.com"},{"url":"https://github.com/mcollina/msgpack5/security/advisories/GHSA-24ch-f2g6-9hhh","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-24ch-f2g6-9hhh"}],"tags":["nvd","ghsa","npm","cve.org"],"aliases":["GHSA-24ch-f2g6-9hhh"],"ecosystem":"npm","ingestedAt":"2026-10-08T17:56:11.715Z","slug":"CVE-2026-107298","body":"## Overview\n\nmsgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the array and map decoding paths have no nesting-depth limit, allowing an attacker who can provide MessagePack input to submit deeply nested containers that exhaust the JavaScript call stack and interrupt a process, worker, or request handler. This issue is fixed in version 6.1.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-107298)\n\nAffected packages:\n\n- `msgpack5 < 6.1.0`\n\nPatched in:\n\n- `msgpack5 6.1.0`\n\nSource: https://github.com/advisories/GHSA-24ch-f2g6-9hhh","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}