7.5Hoch
CVE-2026-93558Io.netty/netty-codec-http: netty: unbounded per-connection queue growth in websocketserverextensionhandler leads to denial of service
Beschreibung
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.
Schwachstellentyp (CWE):
CWE-1035
Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.
Betroffene Produkte und Versionen
| Hersteller | Produkt | Versionen | |
|---|---|---|---|
| build keycloak | 26.4 | — | |
| build keycloak | 26.6 | — | |
| quarkus | 3.27 | — | |
| quarkus | 3.33 | — | |
| Red Hat | Red Hat AMQ Broker 7 | all versions | |
| Red Hat | Red Hat AMQ Clients | all versions | |
| Red Hat | Red Hat Build of Apache Camel 3.33.3.SP2 | all versions | |
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 | all versions | |
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | all versions | |
| Red Hat | Red Hat build of Apicurio Registry 3 | all versions | |
| Red Hat | Red Hat Build of Debezium 3.6 | — | |
| Red Hat | Red Hat build of Keycloak 26.4 | all versions | |
| Red Hat | Red Hat build of Keycloak 26.4.17 | — | |
| Red Hat | Red Hat build of Keycloak 26.6 | all versions | |
| Red Hat | Red Hat build of Keycloak 26.6.8 | — | |
| 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 | all versions | |
| Red Hat | Red Hat Fuse 7 | — | |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | — | |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 | — | |
| Red Hat | Red Hat Single Sign-On 7 | all versions |
Referenzen und Patches
- RHSA-2026:69440 vendor-advisory
- RHSA-2026:69470 vendor-advisory
- RHSA-2026:70257 vendor-advisory
- RHSA-2026:83612 vendor-advisory
- RHSA-2026:95759 vendor-advisory
- RHSA-2026:95760 vendor-advisory
- RHSA-2026:95761 vendor-advisory
- RHSA-2026:95762 vendor-advisory
- RHSA-2026:95887 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-93558 vdb-entry
- RHBZ#2536932 issue-tracking