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CVE-2026-93558

CVE.org · Published

Historical CVEs JSON AI instructions

Record status: Published
Identifier year (not publication year): 2026
Source publication: Sep 18, 2026
Source updated: Oct 15, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

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

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.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Red Hat Build of Apache Camel 3.33.3.SP2

Vendor: Red Hat
Product: Red Hat Build of Apache Camel 3.33.3.SP2
Platforms: Unknown
Default status: affected
Package: io.netty/netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Build of Apache Camel 3.33.3.SP2 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
4.1.138.Final-redhat-00001	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Build of Debezium 3.6

Vendor: Red Hat
Product: Red Hat Build of Debezium 3.6
Platforms: Unknown
Default status: unaffected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat build of Quarkus 3.27.5.SP2

Vendor: Red Hat
Product: Red Hat build of Quarkus 3.27.5.SP2
Platforms: Unknown
Default status: unaffected
Package: netty-codec-http
Package collection: https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

No explicit version tuples; consult this entry's default status.

Red Hat build of Quarkus 3.33.3.SP2

Vendor: Red Hat
Product: Red Hat build of Quarkus 3.33.3.SP2
Platforms: Unknown
Default status: unaffected
Package: netty-codec-http
Package collection: https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

No explicit version tuples; consult this entry's default status.

Red Hat AMQ Broker 7

Vendor: Red Hat
Product: Red Hat AMQ Broker 7
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat AMQ Clients

Vendor: Red Hat
Product: Red Hat AMQ Clients
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat build of Apache Camel 4 for Quarkus 3

Vendor: Red Hat
Product: Red Hat build of Apache Camel 4 for Quarkus 3
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat build of Apache Camel for Spring Boot 4

Vendor: Red Hat
Product: Red Hat build of Apache Camel for Spring Boot 4
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat build of Apicurio Registry 3

Vendor: Red Hat
Product: Red Hat build of Apicurio Registry 3
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Build of Keycloak

Vendor: Red Hat
Product: Red Hat Build of Keycloak
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Data Grid 8

Vendor: Red Hat
Product: Red Hat Data Grid 8
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat Fuse 7

Vendor: Red Hat
Product: Red Hat Fuse 7
Platforms: Unknown
Default status: unknown
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.

Red Hat JBoss Enterprise Application Platform 7

Vendor: Red Hat
Product: Red Hat JBoss Enterprise Application Platform 7
Platforms: Unknown
Default status: unknown
Package: netty-codec-http
Package collection: https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

No explicit version tuples; consult this entry's default status.

Red Hat JBoss Enterprise Application Platform 8

Vendor: Red Hat
Product: Red Hat JBoss Enterprise Application Platform 8
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

No explicit version tuples; consult this entry's default status.

Red Hat Single Sign-On 7

Vendor: Red Hat
Product: Red Hat Single Sign-On 7
Platforms: Unknown
Default status: affected
Package: netty-codec-http
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.