CVE-2022-2421 is a critical vulnerability in the Socket.io js library and socket.io-parser, stemming from improper type validation during attachment parsing. This flaw allows an unauthenticated attacker to overwrite the _placeholder object, enabling them to inject function references into query objects. With a CVSS score of 9.8, this vulnerability poses a severe risk, potentially leading to complete compromise of confidentiality, integrity, and availability. Despite its critical severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.3.3CPE matchmatch criteria | cpe:2.3:a:socket:socket.io-parser:*:*:*:*:*:node.js:*:* | ||
>= 3.4.0, < 3.4.2CPE matchmatch criteria | cpe:2.3:a:socket:socket.io-parser:*:*:*:*:*:node.js:*:* | ||
>= 4.0.0, < 4.0.5CPE matchmatch criteria | cpe:2.3:a:socket:socket.io-parser:*:*:*:*:*:node.js:*:* | ||
>= 4.1.0, < 4.2.1CPE matchmatch criteria | cpe:2.3:a:socket:socket.io-parser:*:*:*:*:*:node.js:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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.
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.