{"id":"CVE-2020-7637","details":"class-transformer before 0.3.1 allow attackers to perform Prototype Pollution. The classToPlainFromExist function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.","aliases":["GHSA-6gp3-h3jj-prx4","SNYK-JS-CLASSTRANSFORMER-564431"],"modified":"2026-07-09T14:43:47.608446Z","published":"2020-04-06T13:15:12.550Z","references":[{"type":"FIX","url":"https://github.com/typestack/class-transformer/commit/8f04eb9db02de708f1a20f6f2d2bb309b2fed01e"},{"type":"EVIDENCE","url":"https://snyk.io/vuln/SNYK-JS-CLASSTRANSFORMER-564431"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/typestack/class-transformer","events":[{"introduced":"0"},{"fixed":"7020a72bca9765d08a6e91f2fd1152c0012c426c"},{"fixed":"8f04eb9db02de708f1a20f6f2d2bb309b2fed01e"}],"database_specific":{"cpe":"cpe:2.3:a:class-transformer_project:class-transformer:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"0"},{"fixed":"0.3.1"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v0.2.3","v0.1.10","0.1.1","0.1.0","0.0.19","0.0.17","0.0.16","0.0.15","0.0.14","0.0.13","0.0.12","0.0.11","0.0.9","0.0.8","0.0.6","0.0.5","0.0.4","0.0.3","0.0.2","0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-7637.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}