node-socket.io-parser: Socket.IO is an open source, real-time, bidirectional, event-based, communication framework
CVE-2026-33151 is fixed in node-socket.io-parser on 1 platform by DEBIAN-CVE-2026-33151 (version 4.2.1+~3.1.0-4), released March 20, 2026. It is not reported as exploited. Patch Radar priority: High.
Socket.IO is an open source, real-time, bidirectional, event-based, communication framework. Prior to versions 3.3.5, 3.4.4, and 4.2.6, a specially crafted Socket.IO packet can make the server wait for a large number of binary attachments and buffer them, which can be exploited to make the server run out of memory. This issue has been patched in versions 3.3.5, 3.4.4, and 4.2.6.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-socket.io-parser · Debian 14 | 4.2.1+~3.1.0-4 | DEBIAN-CVE-2026-33151 | Mar 20, 2026 |
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