CVE-2026-48779
Last modified
CVE-2026-48779 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ws Project | Ws | >= 1.1.0, < 5.2.5 |
| Ws Project | Ws | >= 6.0.0, < 6.2.4 |
| Ws Project | Ws | >= 7.0.0, < 7.5.11 |
| Ws Project | Ws | >= 8.0.0, < 8.21.0 |
References
- https://github.com/websockets/ws/security/advisories/GHSA-96hv-2xvq-fx4pMitigation, Patch, Vendor Advisory, Exploit
- https://github.com/websockets/ws/security/advisories/GHSA-96hv-2xvq-fx4pMitigation, Patch, Vendor Advisory, Exploit
Timeline
- Published
- Last Modified
- Status
- Analyzed
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