Bug 2501958 (CVE-2026-44891) - CVE-2026-44891 io.netty/netty-codec-stomp: Netty: Denial of Service vulnerability in STOMP decoder
Summary: CVE-2026-44891 io.netty/netty-codec-stomp: Netty: Denial of Service vulnerabi...
Keywords:
Status: NEW
Alias: CVE-2026-44891
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-17 21:03 UTC by OSIDB Bzimport
Modified: 2026-08-13 14:51 UTC (History)
36 users (show)

Fixed In Version:
Clone Of:
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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:54622 0 None None None 2026-08-13 14:51:14 UTC

Description OSIDB Bzimport 2026-07-17 21:03:27 UTC 
Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.stomp.StompSubframeDecoder fails to limit the total number of headers or their cumulative size per frame, and the maxLineLength parameter only restricts individual header lines. An attacker can send a large number of short headers that are accumulated in memory inside DefaultStompHeadersSubframe until the JVM throws an OutOfMemoryError, causing denial of service for servers exposing a STOMP endpoint based on StompSubframeDecoder. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Comment 2 errata-xmlrpc 2026-08-13 14:51:11 UTC 
This issue has been addressed in the following products:

  Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16

Via RHSA-2026:54622 https://access.redhat.com/errata/RHSA-2026:54622
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