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CVE-2023-37899

23
FAUCET Score

CVE-2023-37899 is a high-severity denial-of-service vulnerability affecting Feathersjs versions prior to 5.0.8 and 4.5.18. An unauthenticated attacker can crash the NodeJS process by sending a specially crafted Socket.io message that triggers an invalid string conversion error. The vulnerability has a CVSS score of 7.5, indicating a high impact on availability with low attack complexity. There is no known exploit code or active exploitation, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.5.18CPE matchmatch criteria
cpe:2.3:a:feathersjs:feathers:*:*:*:*:*:node.js:*:*
>= 5.0.0, < 5.0.8CPE matchmatch criteria
cpe:2.3:a:feathersjs:feathers:*:*:*:*:*: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
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 43rd percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: @feathersjs/socketioFixed in: 4.5.18
npmpatch availablevia ghsa
Product: @feathersjs/socketioFixed in: 5.0.8
npmpatch availablevia ghsa
Product: @feathersjs/transport-commonsFixed in: 4.5.18
npmpatch availablevia ghsa
Product: @feathersjs/transport-commonsFixed in: 5.0.8

Vendor Advisories (1)

npmGHSA-hhr9-rh25-hvf9high

Feathers socket handler allows abusing implicit toString

Jul 20, 2023

References

github.com / feathersjs/feathers/blob/crow/CHANGELOG.md
Release Notes
github.com / feathersjs/feathers/blob/dove/CHANGELOG.md
Release Notes
github.com / feathersjs/feathers/pull/3241
Patch
github.com / feathersjs/feathers/pull/3242
Patch
github.com / feathersjs/feathers/security/advisories/GHSA-hhr9-rh25-hvf9
ExploitVendor Advisory