7.5

CVE-2026-44891

Exploit

Netty: Denial of Service via Unbounded Headers in StompSubframeDecoder

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
NettyNetty Version < 4.1.136
NettyNetty Version >= 4.2.0 < 4.2.16
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.42% 0.347
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

https://github.com/netty/netty/security/advisories/GHSA-vhch-2wf3-m8rp
Vendor Advisory
Exploit
https://github.com/netty/netty/pull/17063
Patch
Issue Tracking
https://github.com/netty/netty/pull/17065
Patch
Issue Tracking
https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b
Patch
https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6
Patch
https://github.com/netty/netty/releases/tag/netty-4.1.136.Final
Release Notes
https://github.com/netty/netty/releases/tag/netty-4.2.16.Final
Release Notes