CVE-2020-7617Prototype Pollution
- 4.4MediumCVSS base score
- 0.87%Exploitation in 30 daysEPSS · top 41% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
ini-parser through 0.0.2 is vulnerable to Prototype Pollution.The library could be tricked into adding or modifying properties of Object.prototype using a '__proto__' payload.
Timeline
ID reserved
By snyk
- 2 months later
· 2 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| snykCNA (assigner) | 3.1 | Medium4.4 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.87% · top 41% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.4.
Affected products
- affected unspecified – ≤ 0.0.2
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmini-parserGHSA-96r7-mrqf-jhcc (opens in a new tab)
What to do
Exploitation: var a = require("ini-parser"); a.parse('[__proto__]\ntoString=JHU'); console.log({}.toString);
References
References2
- https://github.com/rawiroaisen/node-ini-parser/blob/master/index.js#L14 (opens in a new tab)x_refsource_MISCx_transferred
- https://snyk.io/vuln/SNYK-JS-INIPARSER-564122 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-0473 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-96r7-mrqf-jhcc (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-7617)Record last updated .