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CVE-2021-3815Prototype Pollution in fabiocaccamo/utils.js
- 8.0HighCVSS 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
utils.js is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Timeline
ID reserved
By @huntrdev
- 3 months later
· 3 months later
Published
- 3 years later
· 3 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 |
|---|---|---|---|
| @huntrdevCNA (assigner) | 3.0 | High8.0 | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H |
| 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)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.0.
Affected products
fabiocaccamo · fabiocaccamo/utils.js
- affected unspecified – < 0.17.2
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npm@fabiocaccamo/utils.jsGHSA-3xph-cp8f-2229 (opens in a new tab)
References
References2
- https://huntr.dev/bounties/20f48c63-f078-4173-bcac-a9f34885f2c0 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/fabiocaccamo/utils.js/commit/102efafb291ce1916985514440d3bf8a6826890a (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-2021-2435 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-3xph-cp8f-2229 (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-2021-3815)Record last updated .