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High severity7.5GHSA Advisory· Published Jun 17, 2026· Updated Sep 11, 2026

CVE-2026-48779

CVE-2026-48779

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
wsnpm
>= 1.1.0, < 5.2.55.2.5
wsnpm
>= 6.0.0, < 6.2.46.2.4
wsnpm
>= 7.0.0, < 7.5.117.5.11
wsnpm
>= 8.0.0, < 8.21.08.21.0

Affected products

70

Patches

Vulnerability mechanics

References

36

News mentions

0

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