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CVE-2020-28280

28
FAUCET Score

CVE-2020-28280 is a critical prototype pollution vulnerability affecting predefine versions 0.0.0 through 0.1.2, which could lead to denial of service and potentially remote code execution. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with low complexity and no user interaction, allowing for complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.0.0, <= 0.1.2CPE matchmatch criteria
cpe:2.3:a:predefine_project:predefine:*:*:*:*:*: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
2.94%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0294 is in the 77th 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

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: predefineFixed in: 0.1.3

Vendor Advisories (1)

npmGHSA-mx3x-ghqm-r43hcritical

Prototype pollution vulnerability in 'predefine'

Oct 12, 2021

References

github.com / bigpipe/predefine/blob/238137e3d1b8288ff5d7529c3cbcdd371888c26b/index.js
ExploitThird Party Advisory
whitesourcesoftware.com / vulnerability-database/CVE-2020-28280
Broken LinkThird Party Advisory