Allocation of Resources Without Limits or Throttling Affecting socket.io-parser package, versions <3.3.5>=3.4.0 <3.4.4>=4.0.0 <4.2.6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-SOCKETIOPARSER-15680278
- published18 Mar 2026
- disclosed17 Mar 2026
- creditdarrachequesne
Introduced: 17 Mar 2026
NewCVE-2026-33151 (opens in a new tab)How to fix?
Upgrade socket.io-parser to version 3.3.5, 3.4.4, 4.2.6 or higher.
Overview
socket.io-parser is a socket.io protocol parser
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the Decoder class, which accepts an unlimited number of binary attachments. An attacker can exploit this to exhaust server memory.