{"id":"CVE-2021-33420","aliases":["GHSA-hw46-vg6w-88fj"],"url":"https://o3.security/vulnerability/CVE-2021-33420","summary":"replicator vulnerable to Deserialization of Untrusted Data","details":"A deserialization issue discovered in inikulin replicator before 1.0.4 allows remote attackers to run arbitrary code via the fromSerializable function in TypedArray object.","published":"2022-12-15T19:15:15.807Z","modified":"2026-08-07T19:46:54.398056Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"replicator","fixedVersion":"1.0.4"}],"fix":{"url":"https://github.com/inikulin/replicator/commit/2c626242fb4a118855262c64b5731b2ce98e521b","label":"inikulin/replicator@2c62624"},"references":[{"type":"ADVISORY","url":"https://github.com/inikulin/replicator/issues/16"},{"type":"ADVISORY","url":"https://github.com/inikulin/replicator/pull/17"},{"type":"FIX","url":"https://github.com/inikulin/replicator/commit/2c626242fb4a118855262c64b5731b2ce98e521b"},{"type":"EVIDENCE","url":"https://advisory.checkmarx.net/advisory/CX-2021-4787"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T19:46:54.398056Z"}}