{"action":"Upgrade msgpack5 to 6.1.0 or later.","affected":[{"fixed":"6.1.0","introduced":"0"}],"component":"msgpack5","cve_ids":["CVE-2026-107301"],"ecosystem":"npm","epss":0.00366,"exploited":false,"fixed_versions":["6.1.0"],"ghsa_id":"GHSA-8hq7-ggx2-cc6m","id":"tcs_01M5KFD49A22TTF6YG50GGYNBA","modified_at":"2026-10-08T18:00:08.899286917Z","published_at":"2026-10-08T17:39:57Z","references":["https://osv.dev/vulnerability/GHSA-8hq7-ggx2-cc6m","https://github.com/mcollina/msgpack5/security/advisories/GHSA-8hq7-ggx2-cc6m","https://github.com/mcollina/msgpack5/commit/20e82600ac9462e679c8a45e5723315f21e2c774","https://github.com/mcollina/msgpack5","https://github.com/mcollina/msgpack5/releases/tag/v6.1.0"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-8hq7-ggx2-cc6m","url":"https://osv.dev/vulnerability/GHSA-8hq7-ggx2-cc6m"}],"summary":"msgpack5: Partial options disable prototype protection"}