mixin-deep is vulnerable to Prototype Pollution in versions before 1.3.2 and version 2.0.0. The function mixin-deep could be tricked into adding or modifying properties of Object.prototype using a constructor payload.
https://www.oracle.com//security-alerts/cpujul2021.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXRA365KZCUNXMU3KDH5JN5BEPNIGUKC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFNIVG2XYFPZJY3DYYBJASZ7ZMKBMIJT/
https://snyk.io/vuln/SNYK-JS-MIXINDEEP-450212
Source: Mitre, NVD
Published: 2019-08-23
Updated: 2023-11-07
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.00798