Uncontrolled Memory Allocation Affecting puppetserver package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.31% (22nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL7-PUPPETSERVER-20123545
  • published24 Sept 2026
  • disclosed7 Sept 2026

Introduced: 7 Sep 2026

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

How to fix?

There is no fixed version for RHEL:7 puppetserver.

NVD Description

Note: Versions mentioned in the description apply only to the upstream puppetserver package and not the puppetserver package as distributed by RHEL. See How to fix? for RHEL:7 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