Prototype Pollution in mixin-deep
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.
Recommendation
If you are using mixin-deep 2.x, upgrade to version 2.0.1 or later.
If you are using mixin-deep 1.x, upgrade to version 1.3.2 or later.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | mixin-deep | < 1.3.2, >= 2.0.0, < 2.0.1 | 1.3.2, 2.0.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-10746
- https://github.com/jonschlinkert/mixin-deep/commit/8f464c8ce9761a8c9c2b3457eaeee9d404fa7af9
- https://github.com/jonschlinkert/mixin-deep/commit/90ee1fab375fccfd9b926df718243339b4976d50
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFNIVG2XYFPZJY3DYYBJASZ7ZMKBMIJT
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXRA365KZCUNXMU3KDH5JN5BEPNIGUKC
- https://snyk.io/vuln/SNYK-JS-MIXINDEEP-450212
- https://www.npmjs.com/advisories/1013
- https://www.oracle.com//security-alerts/cpujul2021.html
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-88- Platform
- npm
- Package
mixin-deep- Disclosed
- 27.08.2019
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-fhjf-83wg-r2j9 - CC BY 4.0
Vulnerability history: mixin-deep
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 07.2018 08.2019
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
Disclosures per year
- 2018: 1
- 2019: 1
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
-
Prototype Pollution in mixin-deep this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.