Improper input validation in HackerOne mixin-deep node module
Priority MEDIUM 42CWE-471Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
mixin-deep node module before 1.3.1 suffers from a Modification of Assumed-Immutable Data (MAID) vulnerability, which allows a malicious user to modify the prototype of "Object" via __proto__, causing the addition or modification of an existing property that will exist on all objects.
Why it matters now
EPSS 0.0209 81st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed mixin-deep node module (HackerOne): 1.3.1mixin-deep (npm): 1.3.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HackerOne | mixin-deep node module | before 1.3.1 | 1.3.1 | Patch available | CNA |
| — | mixin-deep (npm) | before 1.3.1 | 1.3.1 | Patch available | GHSA-3mpr-hq3p-49h9 |
- mixin-deep node module VendorHackerOne Affected before 1.3.1 Fixed in 1.3.1 Patch available CNA
- mixin-deep (npm) Vendor— Affected before 1.3.1 Fixed in 1.3.1 Patch available GHSA-3mpr-hq3p-49h9
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mixin-deep_project:mixin-deep:*:*:*:*:*:node.js:*:* | before 1.3.1 | Vulnerable | Mixin-deep Project |
- cpe:2.3:a:mixin-deep_project:mixin-deep:*:*:*:*:*:node.js:*:* Versions before 1.3.1 Vulnerable ·Mixin-deep Project
Remediation
- Fix · CNA mixin-deep node module (HackerOne) Fixed in 1.3.1
- Fix · GHSA-3mpr-hq3p-49h9 mixin-deep (npm) Fixed in 1.3.1 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 1 product
- Logging Subsystem for Red Hat OpenShift
Timeline
- 2026-10-02 Threatist record created from CVE-2018-3719
- 2026-10-03 Alias added: GHSA-3mpr-hq3p-49h9
References
More Mixin-deep Project Mixin-deep vulnerabilities
- TI-2019-08011 mixin-deep is vulnerable to Prototype Pollution in versions before 1.3.2 and version… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2018-3719 · CVE Program
- CVE-2018-3719 · NVD
- FIRST EPSS
- GHSA-3mpr-hq3p-49h9 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-3719 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences