{"id":"CVE-2021-33420","aliases":["EUVD-2022-7653","GHSA-hw46-vg6w-88fj"],"status":"published","title":"replicator vulnerable to Deserialization of Untrusted Data","description":"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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01715,"percentile":0.77742,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-502"],"published":"2022-12-15T00:00:00Z","modified":"2026-10-20T10:53:47Z","fixes":[{"ecosystem":"npm","package":"replicator","fixed_in":["1.0.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"replicator","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.4"}]}]},{"source":"osv","ecosystem":"npm","package":"replicator","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.0.4"}]}]}],"products":[{"vendor":"replicator_project","product":"replicator"}],"references":[{"url":"https://github.com/inikulin/replicator/issues/16","tags":["x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/inikulin/replicator/pull/17","tags":["x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/inikulin/replicator/commit/2c626242fb4a118855262c64b5731b2ce98e521b","tags":["x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://advisory.checkmarx.net/advisory/CX-2021-4787","tags":["x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33420","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hw46-vg6w-88fj"},{"url":"https://github.com/inikulin/replicator","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-33420","description":"A deserialization issue discovered in inikulin replicator before 1.0.4 allows remote attackers to run arbitrary code via the fromSerializable function in TypedArray 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