CVE-2026-93558: Red Hat Amq Broker 7

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

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

• Red Hat Red Hat Amq Broker 7
• Red Hat Red Hat Amq Clients
• Red Hat Red Hat Build Of Apache Camel 3.33.3.sp2: before 4.1.138.Final-redhat-00001 (fixed in 4.1.138.Final-redhat-00001)
• Red Hat Red Hat Build Of Apache Camel 4 For Quarkus 3
• Red Hat Red Hat Build Of Apache Camel For Spring Boot 4
• Red Hat Red Hat Build Of Apicurio Registry 3
• Red Hat Red Hat Build Of Debezium 3
• Red Hat Red Hat Build Of Keycloak
• Red Hat Red Hat Build Of Quarkus 3.27.5.sp2
• Red Hat Red Hat Build Of Quarkus 3.33.3.sp2
• Red Hat Red Hat Data Grid 8
• Red Hat Red Hat Fuse 7
• Red Hat Red Hat JBoss Enterprise Application Platform 7
• Red Hat Red Hat JBoss Enterprise Application Platform 8
• Red Hat Red Hat Single Sign-On 7

Published 2026-09-18. Last modified 2026-10-10.