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CVE-2022-41940

22
FAUCET Score

CVE-2022-41940 is a denial-of-service vulnerability affecting Engine.IO, including its use within Socket.IO, where a specially crafted HTTP request can crash the Node.js server. This medium-severity vulnerability (CVSS 6.5) can be exploited remotely with low attack complexity, leading to high availability impact. While no active exploitation, public exploit code, or significant community discussion has been observed, upgrading to Engine.IO versions 3.6.1 or 6.2.1 is recommended to mitigate the risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.6.1CPE matchmatch criteria
cpe:2.3:a:socket:engine.io:*:*:*:*:*:node.js:*:*
>= 4.0.0, < 6.2.1CPE matchmatch criteria
cpe:2.3:a:socket:engine.io:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.94%
Probability of exploitation in next 30 days
EPSS Percentile
78.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0194 is in the 90th percentile among its peer group of 21,957 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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: engine.ioFixed in: 3.6.1
npmpatch availablevia ghsa
Product: engine.ioFixed in: 6.2.1
redhatpatch availablevia redhat_api
Product: Red Hat Fuse 7.12Fixed in: engine.io
View patch
redhatend of lifevia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-rhel8

Vendor Advisories (2)

redhatCVE-2022-41940Moderate

engine.io: Specially crafted HTTP request can trigger an uncaught exception

Nov 22, 2022
npmGHSA-r7qp-cfhv-p84wmedium

Uncaught exception in engine.io

Nov 21, 2022

References

github.com / socketio/engine.io/commit/425e833ab13373edf1dd5a0706f07100db14e3c6
PatchThird Party Advisory
github.com / socketio/engine.io/commit/83c4071af871fc188298d7d591e95670bf9f9085
PatchThird Party Advisory
github.com / socketio/engine.io/security/advisories/GHSA-r7qp-cfhv-p84w
ExploitThird Party Advisory