Allocation of Resources Without Limits or Throttling Affecting jetty12 package, versions <12.0.39-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.31% (22nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-JETTY12-19644132
  • published29 Sept 2026
  • disclosed7 Sept 2026

Introduced: 7 Sep 2026

CVE-2026-19204  (opens in a new tab)
CWE-770  (opens in a new tab)
CWE-789  (opens in a new tab)

How to fix?

Upgrade Debian:unstable jetty12 to version 12.0.39-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jetty12 package and not the jetty12 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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 Base Scores

version 3.1