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CVE-2021-23448

31
FAUCET Score

CVE-2021-23448 is a critical prototype pollution vulnerability affecting all versions of the 'config-handler' package, allowing unauthenticated attackers to achieve full compromise of confidentiality, integrity, and availability. With a CVSS score of 9.8, this network-exploitable flaw requires no user interaction and has a low attack complexity. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0CPE matchmatch criteria
cpe:2.3:a:config-handler_project:config-handler:1.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.15%
Probability of exploitation in next 30 days
EPSS Percentile
63.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0115 is in the 49th percentile among its peer group of 36,835 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-2w3f-9w3q-qw77critical

Prototype Pollution in config-handler

Oct 12, 2021

References

github.com / jarradseers/config-handler/issues/1
ExploitThird Party Advisory
snyk.io / vuln/SNYK-JS-CONFIGHANDLER-1564947
ExploitIssue TrackingMitigationThird Party Advisory