{"schema_version":"1.9.0","id":"GHSA-fhjf-83wg-r2j9","published":"2019-08-27T17:42:33Z","modified":"2026-09-10T03:48:25.650276868Z","aliases":["CVE-2019-10746","SNYK-JS-MIXINDEEP-450212"],"summary":"Prototype Pollution in mixin-deep","details":"Versions of `mixin-deep` prior to 2.0.1 or 1.3.2 are vulnerable to Prototype Pollution. The `mixinDeep` function fails to validate which Object properties it updates. This allows attackers to modify the prototype of Object, causing the addition or modification of an existing property on all objects.\n\n\n## Recommendation\n\nIf you are using `mixin-deep` 2.x, upgrade to version 2.0.1 or later.\nIf you are using `mixin-deep` 1.x, upgrade to version 1.3.2 or later.","affected":[{"package":{"name":"mixin-deep","ecosystem":"npm","purl":"pkg:npm/mixin-deep"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/08/GHSA-fhjf-83wg-r2j9/GHSA-fhjf-83wg-r2j9.json"}},{"package":{"name":"mixin-deep","ecosystem":"npm","purl":"pkg:npm/mixin-deep"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.0.1"}]}],"versions":["2.0.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2019/08/GHSA-fhjf-83wg-r2j9/GHSA-fhjf-83wg-r2j9.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-10746"},{"type":"WEB","url":"https://github.com/jonschlinkert/mixin-deep/commit/8f464c8ce9761a8c9c2b3457eaeee9d404fa7af9"},{"type":"WEB","url":"https://github.com/jonschlinkert/mixin-deep/commit/90ee1fab375fccfd9b926df718243339b4976d50"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFNIVG2XYFPZJY3DYYBJASZ7ZMKBMIJT"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXRA365KZCUNXMU3KDH5JN5BEPNIGUKC"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-JS-MIXINDEEP-450212"},{"type":"WEB","url":"https://www.npmjs.com/advisories/1013"},{"type":"WEB","url":"https://www.oracle.com//security-alerts/cpujul2021.html"}],"database_specific":{"cwe_ids":["CWE-88"],"github_reviewed":true,"github_reviewed_at":"2019-08-27T17:21:43Z","nvd_published_at":"2019-08-23T17:15:00Z","severity":"CRITICAL"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}