MEDIUM

CVE-2022-41940

CVSS v3

6.5

MEDIUM

EPSS Score

2.1 %

exploit probability, as of 2026-10-17

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

engine.ionpmfrom 4.0.0 · fixed in 6.2.1

Vendor advisories

CVE-2022-41940 Red Hat Product Security1 product fixed · 2 known affected
engine.io: Specially crafted HTTP request can trigger an uncaught exception
engine.io as a component of Red Hat JBoss Data Grid 7 · quay/quay-rhel8 as a component of Red Hat Quay 3
RHSA-2023:3954 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Red Hat Fuse 7.12 release and security update

Full record on NVD

Description

Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. A specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process. This impacts all the users of the engine.io package, including those who uses depending packages like socket.io. There is no known workaround except upgrading to a safe version. There are patches for this issue released in versions 3.6.1 and 6.2.1.

Technical details

Published: 2022-11-22

Frequently asked questions

What is CVE-2022-41940?

Is CVE-2022-41940 actively exploited?

Active exploitation of CVE-2022-41940 has not been confirmed. Its EPSS score was 2.1% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-41940?

CVE-2022-41940 has a CVSS v3 base score of 6.5 (MEDIUM severity).

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