Prototype pollution in js-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 js-ini before 1.3.0. If an attacker submits a malicious INI file to an application that parses it with parse , they will pollute the prototype on the application. This can be exploited further depending on the context.
Why it matters now
EPSS 0.01222 68th percentileScored 2026-11-07
Fix Fixed js-ini: 1.3.0js-ini (npm): 1.3.0
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 |
|---|---|---|---|---|---|
| — | js-ini | before 1.3.0 | 1.3.0 | Patch available | CNA |
| — | js-ini (npm) | before 1.3.0 | 1.3.0 | Patch available | GHSA-m939-vrfp-9v8p |
- js-ini Vendor— Affected before 1.3.0 Fixed in 1.3.0 Patch available CNA
- js-ini (npm) Vendor— Affected before 1.3.0 Fixed in 1.3.0 Patch available GHSA-m939-vrfp-9v8p
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:js-ini_project:js-ini:*:*:*:*:*:node.js:*:* | before 1.3.0 | Vulnerable | Js-ini Project |
- cpe:2.3:a:js-ini_project:js-ini:*:*:*:*:*:node.js:*:* Versions before 1.3.0 Vulnerable ·Js-ini Project
Remediation
- Fix · CNA js-ini Fixed in 1.3.0
- Fix · GHSA-m939-vrfp-9v8p js-ini (npm) Fixed in 1.3.0 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28461
- 2026-10-03 Alias added: GHSA-m939-vrfp-9v8p
References
Sources
- CVE-2020-28461 · CVE Program
- CVE-2020-28461 · NVD
- FIRST EPSS
- GHSA-m939-vrfp-9v8p · GitHub Advisory Database · CC BY 4.0
- CVE-2020-28461 · 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