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CVE-2026-19204

CVE-2026-19204

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

A client may send a WebSocket frame with an unknown opcode and a very large declared payload length, causing Jetty to attempt a large memory allocation and potentially exhaust the JVM heap. This occurs when auto-fragmentation is enabled, as unknown opcodes bypass the normal maximum frame size handling and payload allocation occurs before the opcode is validated.

CVSS 8.7 · High · EPSS 0.3%

Published
Updated

Stack: system

Affected products and versions

  • eclipse jetty

    Versions
    • ≥ 12.1.0, ≤ 12.1.11: Affected (semver)
    • ≥ 12.0.0, ≤ 12.0.37: Affected (semver)
    • ≥ 11.0.0, ≤ 11.0.31: Affected (semver)
    • ≥ 10.0.0, ≤ 10.0.31: Affected (semver)

    No fix published

  • jetty12 Debian:13

    Versions
    • 12.0.17-3
    • 12.0.17-3.1
    • 12.0.17-3.1~deb13u1
    • 12.0.32-1
    • 12.0.32-2
    • 12.0.33-1
    • 12.0.39-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty12 Debian:14

    Versions
    • 12.0.17-3
    • 12.0.17-3.1
    • 12.0.17-3.1~deb13u1
    • 12.0.32-1
    • 12.0.32-2
    • 12.0.33-1
    • 12.0.39-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty9 Ubuntu:16.04:LTS

    Versions
    • 9.2.14-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty9 Ubuntu:18.04:LTS

    Versions
    • 9.2.22-2
    • 9.2.22-3
    • 9.2.23-1
    • 9.4.15-1~18.04.1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty9 Ubuntu:20.04:LTS

    Versions
    • 9.4.18-2build2
    • 9.4.26-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty9 Ubuntu:22.04:LTS

    Versions
    • 9.4.39-3
    • 9.4.44-2
    • 9.4.44-3
    • 9.4.44-4
    • 9.4.45-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty9 Ubuntu:24.04:LTS

    Versions
    • 9.4.51-2
    • 9.4.53-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty12 Ubuntu:26.10

    Versions
    • 12.0.32-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty9 Ubuntu:26.10

    Versions
    • 9.4.58-1
    • 9.4.58-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty12 Ubuntu:26.04:LTS

    Versions
    • 12.0.17-3.1
    • 12.0.32-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • jetty9 Ubuntu:26.04:LTS

    Versions
    • 9.4.57-1
    • 9.4.57-1.1
    • 9.4.58-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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