Prototype pollution in multi-ini
Priority MEDIUM 45CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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
This affects the package multi-ini before 2.1.1. It is possible to pollute an object's prototype by specifying the proto object as part of an array.
Why it matters now
EPSS 0.01455 73rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed multi-ini: 2.1.1multi-ini (npm): 2.1.1
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 |
|---|---|---|---|---|---|
| — | multi-ini | before 2.1.1 | 2.1.1 | Patch available | CNA |
| — | multi-ini (npm) | before 2.1.1 | 2.1.1 | Patch available | GHSA-g78f-549w-c354 |
- multi-ini Vendor— Affected before 2.1.1 Fixed in 2.1.1 Patch available CNA
- multi-ini (npm) Vendor— Affected before 2.1.1 Fixed in 2.1.1 Patch available GHSA-g78f-549w-c354
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:multi-ini_project:multi-ini:*:*:*:*:*:node.js:*:* | before 2.1.1 | Vulnerable | Multi-ini Project |
- cpe:2.3:a:multi-ini_project:multi-ini:*:*:*:*:*:node.js:*:* Versions before 2.1.1 Vulnerable ·Multi-ini Project
Remediation
- Fix · CNA multi-ini Fixed in 2.1.1
- Fix · GHSA-g78f-549w-c354 multi-ini (npm) Fixed in 2.1.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28448
- 2026-10-03 Alias added: GHSA-g78f-549w-c354
References
More Multi-ini Project Multi-ini vulnerabilities
- TI-2020-17275 Prototype pollution in multi-ini CVSS 3.1HIGH 8.1
Sources
- CVE-2020-28448 · CVE Program
- CVE-2020-28448 · NVD
- FIRST EPSS
- GHSA-g78f-549w-c354 · GitHub Advisory Database · CC BY 4.0
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