{"action":"Upgrade msgpack5 to 6.1.0 or later.","affected":[{"fixed":"6.1.0","introduced":"0"}],"component":"msgpack5","cve_ids":["CVE-2026-107296"],"ecosystem":"npm","epss":0.00276,"exploited":false,"fixed_versions":["6.1.0"],"ghsa_id":"GHSA-qw35-55vc-rhgj","id":"tcs_01M5KG76XGYR16GB90RAT3W3YS","modified_at":"2026-10-08T17:45:03.538503996Z","published_at":"2026-10-08T17:39:30Z","references":["https://osv.dev/vulnerability/GHSA-qw35-55vc-rhgj","https://github.com/mcollina/msgpack5/security/advisories/GHSA-qw35-55vc-rhgj","https://github.com/mcollina/msgpack5/commit/82b70393a824e1088a45a377548d1d9ab82faf91","https://github.com/mcollina/msgpack5","https://github.com/mcollina/msgpack5/releases/tag/v6.1.0"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"GHSA-qw35-55vc-rhgj","url":"https://osv.dev/vulnerability/GHSA-qw35-55vc-rhgj"}],"summary":"msgpack5: Decoding negative int64 values mutates the input buffer"}