CVE-2022-21676 is a denial-of-service vulnerability affecting Engine.IO versions 4.0.0 and later, including dependent packages like Socket.IO. A specially crafted HTTP request can trigger an uncaught exception, crashing the Node.js server. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low complexity and no user interaction, leading to a complete loss of availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.0.0, < 4.1.2CPE matchmatch criteria | cpe:2.3:a:socket:engine.io:*:*:*:*:*:node.js:*:* | ||
>= 5.0.0, < 5.2.1CPE matchmatch criteria | cpe:2.3:a:socket:engine.io:*:*:*:*:*:node.js:*:* | ||
>= 6.0.0, < 6.1.1CPE matchmatch criteria | cpe:2.3:a:socket:engine.io:*:*:*:*:*:node.js:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
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.