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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-93558

Io.netty/netty-codec-http: netty: unbounded per-connection queue growth in websocketserverextensionhandler leads to denial of service

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Status
Published
Published
Updated
Assigning organization
redhat

Description

A flaw was found in Netty's WebSocketServerExtensionHandler. A remote, unauthenticated attacker can exploit this vulnerability by using HTTP/1.1 pipelining to send requests faster than the application can respond. This leads to an unbounded growth of a per-connection queue, consuming excessive memory. Eventually, this can cause the Java Virtual Machine (JVM) to exhaust its heap, resulting in a Denial of Service (DoS) for the affected server.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Build of Apache Camel 3.33.3.SP2

Default version status: affected

  • 4.1.138.Final-redhat-00001 to < *unaffected

Red Hat Red Hat Build of Debezium 3.6

Default version status: unaffected

Red Hat Red Hat build of Quarkus 3.27.5.SP2

Default version status: unaffected

Red Hat Red Hat build of Quarkus 3.33.3.SP2

Default version status: unaffected

Red Hat Red Hat AMQ Broker 7

Default version status: affected

Red Hat Red Hat AMQ Clients

Default version status: affected

Red Hat Red Hat build of Apache Camel 4 for Quarkus 3

Default version status: affected

Red Hat Red Hat build of Apache Camel for Spring Boot 4

Default version status: affected

Red Hat Red Hat build of Apicurio Registry 3

Default version status: affected

Red Hat Red Hat Build of Keycloak

Default version status: affected

Red Hat Red Hat Data Grid 8

Default version status: affected

Red Hat Red Hat Fuse 7

Default version status: unknown

Red Hat Red Hat JBoss Enterprise Application Platform 7

Default version status: unknown

Red Hat Red Hat JBoss Enterprise Application Platform 8

Default version status: affected

Red Hat Red Hat Single Sign-On 7

Default version status: affected

References