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CVE-2026-45736

CVE-2026-45736 · ws: Uninitialized memory disclosure

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

ws is an open source WebSocket client and server for Node.js. Prior to 8.20.1, the websocket.close() implementation is vulnerable to uninitialized memory disclosure when a TypedArray is passed as the reason argument. This vulnerability is fixed in 8.20.1.

CVSS 4.4 · Medium · EPSS 0.7% · Fix available

Published
Updated

Stack: system · node

Affected products and versions

  • ws

    Versions
    • >= 8.0.0, < 8.20.1: Affected

    No fix published

  • node-ws Debian:12

    Versions
    • 8.11.0+~cs13.7.3-1
    • 8.11.0+~cs13.7.3-2
    • 8.18.0+~cs13.7.11-1
    • 8.18.0+~cs14.5.15-1
    • 8.18.1+~cs14.18.2-1
    • 8.19.0+~cs14.19.1-1
    • 8.20.1+~cs14.19.1-1
    • 8.21.0+~cs14.19.1-1
    • 8.21.1+~cs14.19.1-1
    • 8.21.3+~cs14.19.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Debian:13

    Versions
    • 8.18.1+~cs14.18.2-1
    • 8.19.0+~cs14.19.1-1
    • 8.20.1+~cs14.19.1-1
    • 8.21.0+~cs14.19.1-1
    • 8.21.1+~cs14.19.1-1
    • 8.21.3+~cs14.19.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Debian:14

    Versions
    • 8.18.1+~cs14.18.2-1
    • 8.19.0+~cs14.19.1-1
    Affected ranges
    • ECOSYSTEM: < 8.20.1+~cs14.19.1-1

    Update to 8.20.1+~cs14.19.1-1

  • ws npm

    Affected ranges
    • SEMVER: ≥ 8.0.0, < 8.20.1

    Update to 8.20.1

  • node-ws Ubuntu:16.04:LTS

    Versions
    • 0.7.2+ds1.349b7460-1
    • 1.0.1+ds1.e6ddaae4-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Ubuntu:18.04:LTS

    Versions
    • 1.1.0+ds1.e6ddaae4-3build1
    • 1.1.0+ds1.e6ddaae4-3ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Ubuntu:20.04:LTS

    Versions
    • 1.1.0+ds1.e6ddaae4-5
    • 7.2.1-2
    • 7.2.1-3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Ubuntu:22.04:LTS

    Versions
    • 7.4.2+~cs18.0.8-2
    • 7.5.5+~cs13.0.13-1
    • 8.5.0+~cs13.3.3-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Ubuntu:24.04:LTS

    Versions
    • 8.11.0+~cs13.7.3-1
    • 8.11.0+~cs13.7.3-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Ubuntu:25.10

    Versions
    • 8.18.0+~cs14.5.15-1
    • 8.18.1+~cs14.18.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Ubuntu:26.10

    Versions
    • 8.19.0+~cs14.19.1-1
    • 8.20.1+~cs14.19.1-1
    • 8.21.3+~cs14.19.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-ws Ubuntu:26.04:LTS

    Versions
    • 8.18.1+~cs14.18.2-1
    • 8.19.0+~cs14.19.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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