cvedb.io
CVE-2026-48779
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-06-17T13:20:42.887 · Last modified 2026-07-02T12:17:29.653

Summary

ws is an open source WebSocket client and server for Node.js. All versions from 1.1.0 up to (but not including) 5.2.5, from 6.0.0 up to 6.2.4, from 7.0.0 up to 7.5.11, and from 8.0.0 up to 8.21.0 are affected by a memory exhaustion DoS vulnerability. A peer can send a high volume of exceptionally small fragments and data chunks, with modest network traffic, to force the remote peer into allocating and holding structural wrappers that consume far more memory than the default documented message-size limit, leading to process termination due to OOM. This issue has been fixed in versions 5.2.5, 6.2.4, 7.5.11, and 8.21.0.

Affected products

ws_project — ws

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.