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CVE-2020-28283

30
FAUCET Score

CVE-2020-28283 is a critical prototype pollution vulnerability affecting libnested versions 0.0.0 through 1.5.0. This flaw allows an unauthenticated attacker to remotely trigger a denial of service and potentially achieve remote code execution. Despite its critical CVSS score of 9.8, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.0.0, <= 1.5.0CPE matchmatch criteria
cpe:2.3:a:libnested_project:libnested:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.22%
Probability of exploitation in next 30 days
EPSS Percentile
86.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0322 is in the 79th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

npmGHSA-3r9x-mjrm-2725critical

Prototype pollution vulnerability in 'libnested'

Oct 12, 2021

References

github.com / dominictarr/libnested/blob/d028a1b0f2e5f16fc28e568f52b936ae0bca0647/index.js
ExploitThird Party Advisory
whitesourcesoftware.com / vulnerability-database/CVE-2020-28284
Broken Link