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CVE-2021-23373

30
FAUCET Score

CVE-2021-23373 describes a critical Prototype Pollution vulnerability affecting all versions of the 'set-deep-prop' package. This flaw allows an unauthenticated attacker to remotely execute arbitrary code, leading to complete compromise of confidentiality, integrity, and availability, as indicated by its CVSS score of 9.8. While no active exploitation or public exploit code is currently reported, and community discussion is minimal, its high severity warrants immediate attention.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:set-deep-prop_project:set-deep-prop:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.10%
Probability of exploitation in next 30 days
EPSS Percentile
62.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0110 is in the 48th percentile among its peer group of 36,897 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-v42q-78w8-8fcccritical

set-deep-prop Prototype Pollution

Jul 26, 2022

References

security.snyk.io / vuln/SNYK-JS-SETDEEPPROP-1083231
ExploitThird Party Advisory