--- id: CVE-2026-59899 title: >- io.netty/netty-codec-http: Netty: Memory exhaustion in netty-codec-http (decompression bomb) (CVE-2026-59899) summary: >- A flaw was found in the Netty netty-codec-http component. A remote attacker can send HTTP requests containing highly compressed data. The HTTP decoder in netty-codec-http fails to properly limit the decompression of this content, causing t… severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H' cvssSource: vendor cwe: - CWE-409 - CWE-770 vendor: Red Hat product: Red Hat OpenShift Dev Spaces 3.30 affected: - openshift_serverless - amq_clients - build_of_apache_camel_hawtio 4 - build_of_apache_camel_4_for_quarkus 3 - build_of_apicurio_registry 3 - build_of_debezium 3 - build_of_keycloak - enterprise_linux_ai_rhel_ai 3 - jboss_enterprise_application_platform 7 - jboss_enterprise_application_platform 8 - openshift_ai_rhoai - openshift_dev_spaces - satellite 6 - single_sign_on 7 - streams_for_apache_kafka 2 - cryostat_4_on_rhel 9 - amq_broker 7.13.6 - amq_broker 7.14.1 - build_of_apache_camel_4_18_for_quarkus 3.33 - data_grid 8.6.3 - openshift_ai 2.25 - openshift_dev_spaces 3.30 - build_of_apache_camel_4_18_3_for_spring_boot 3.5.16 - build_of_quarkus 3.27.4.SP3 - build_of_quarkus 3.33.2.SP3 - streams_for_apache_kafka 3.2.1 patched: - cryostat_4_on_rhel 9 - amq_broker 7.13.6 - amq_broker 7.14.1 - build_of_apache_camel_4_18_for_quarkus 3.33 - data_grid 8.6.3 - openshift_ai 2.25 - openshift_dev_spaces 3.30 - build_of_apache_camel_4_18_3_for_spring_boot 3.5.16 - build_of_quarkus 3.27.4.SP3 - build_of_quarkus 3.33.2.SP3 - streams_for_apache_kafka 3.2.1 published: '2026-07-09' updated: '2026-09-21' sourceUpdated: '2026-09-21T16:20:31+00:00' source: CSAF sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59899.json' references: - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59899.json - url: 'https://access.redhat.com/security/cve/CVE-2026-59899' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2507482' - url: 'https://www.cve.org/CVERecord?id=CVE-2026-59899' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-59899' - url: 'https://github.com/netty/netty/security/advisories/GHSA-q4f6-jm68-57ww' - url: 'https://netty.io/news/2026/07/09/4-1-136-Final.html' - url: 'https://access.redhat.com/errata/RHSA-2026:68333' - url: 'https://access.redhat.com/errata/RHSA-2026:66545' - url: 'https://access.redhat.com/errata/RHSA-2026:66488' - url: 'https://access.redhat.com/errata/RHSA-2026:48118' - url: 'https://access.redhat.com/errata/RHSA-2026:69296' - url: 'https://access.redhat.com/errata/RHSA-2026:65126' - url: 'https://access.redhat.com/errata/RHSA-2026:62260' - url: 'https://access.redhat.com/errata/RHSA-2026:68754' - url: 'https://access.redhat.com/errata/RHSA-2026:54622' - url: 'https://access.redhat.com/errata/RHSA-2026:47189' - url: 'https://access.redhat.com/errata/RHSA-2026:47172' - url: 'https://access.redhat.com/errata/RHSA-2026:54435' - url: 'https://github.com/netty/netty/releases/tag/netty-4.1.136.Final' - url: 'https://github.com/netty/netty/releases/tag/netty-4.2.16.Final' - url: 'https://github.com/advisories/GHSA-q4f6-jm68-57ww' tags: - csaf - vex - red-hat - ghsa - maven epss: 0.00335 epssPercentile: 0.26855 aliases: - GHSA-q4f6-jm68-57ww ecosystem: maven ingestedAt: '2026-07-22T22:06:57.681Z' --- ## Overview A flaw was found in the Netty netty-codec-http component. A remote attacker can send HTTP requests containing highly compressed data. The HTTP decoder in netty-codec-http fails to properly limit the decompression of this content, causing the system to consume excessive memory. This can lead to memory exhaustion and a denial of service (DoS), making the service unavailable to legitimate users. ## Vendor advisories - **RHSA-2026:68333** · Red Hat · fixed in: Cryostat 4 on RHEL 9 · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68333) - **RHSA-2026:66545** · Red Hat · fixed in: Red Hat AMQ Broker 7.13.6 · released 2026-09-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:66545) - **RHSA-2026:66488** · Red Hat · fixed in: Red Hat AMQ Broker 7.14.1 · released 2026-09-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:66488) - **RHSA-2026:48118** · Red Hat · fixed in: Red Hat Build of Apache Camel 4.18 for Quarkus 3.33 · released 2026-07-30 · [advisory](https://access.redhat.com/errata/RHSA-2026:48118) - **RHSA-2026:69296** · Red Hat · fixed in: Red Hat Data Grid 8.6.3 · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69296) - **RHSA-2026:65126** · Red Hat · fixed in: Red Hat OpenShift AI 2.25 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:65126) - **RHSA-2026:62260** · Red Hat · fixed in: Red Hat OpenShift Dev Spaces 3.30 · released 2026-09-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:62260) - **RHSA-2026:68754** · Red Hat · fixed in: Red Hat OpenShift Dev Spaces 3.30 · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68754) - **RHSA-2026:54622** · Red Hat · fixed in: Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16 · released 2026-08-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:54622) - **RHSA-2026:47189** · Red Hat · fixed in: Red Hat build of Quarkus 3.27.4.SP3 · released 2026-07-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:47189) - **RHSA-2026:47172** · Red Hat · fixed in: Red Hat build of Quarkus 3.33.2.SP3 · released 2026-07-30 · [advisory](https://access.redhat.com/errata/RHSA-2026:47172) - **Red Hat VEX** · Important · affected: OpenShift Serverless, Red Hat AMQ Clients, Red Hat build of Apache Camel - HawtIO 4, Red Hat build of Apache Camel 4 for Quarkus 3, Red Hat build of Apicurio Registry 3, Red Hat build of Debezium 3, … · no fix planned: Red Hat build of Debezium 3, Red Hat JBoss Enterprise Application Platform 7, Red Hat Single Sign-On 7, OpenShift Serverless, … · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59899.json) - **RHSA-2026:54435** · Red Hat · fixed in: Streams for Apache Kafka 3.2.1 · released 2026-08-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:54435) **io.netty/netty-codec-http: Netty: Memory exhaustion in netty-codec-http (decompression bomb)** — rated Important by Red Hat. Released 2026-07-09, updated 2026-09-21. Affected: - OpenShift Serverless - Red Hat AMQ Clients - Red Hat build of Apache Camel - HawtIO 4 - Red Hat build of Apache Camel 4 for Quarkus 3 - Red Hat build of Apicurio Registry 3 - Red Hat build of Debezium 3 - Red Hat Build of Keycloak - Red Hat Enterprise Linux AI (RHEL AI) 3 - Red Hat JBoss Enterprise Application Platform 7 - Red Hat JBoss Enterprise Application Platform 8 - Red Hat OpenShift AI (RHOAI) - Red Hat OpenShift Dev Spaces - Red Hat Satellite 6 - Red Hat Single Sign-On 7 - streams for Apache Kafka 2 Fixed: - Cryostat 4 on RHEL 9 - Red Hat AMQ Broker 7.13.6 - Red Hat AMQ Broker 7.14.1 - Red Hat Build of Apache Camel 4.18 for Quarkus 3.33 - Red Hat Data Grid 8.6.3 - Red Hat OpenShift AI 2.25 - Red Hat OpenShift Dev Spaces 3.30 - Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16 - Red Hat build of Quarkus 3.27.4.SP3 - Red Hat build of Quarkus 3.33.2.SP3 - Streams for Apache Kafka 3.2.1 No fix planned: - Red Hat build of Debezium 3 - Red Hat JBoss Enterprise Application Platform 7 - Red Hat Single Sign-On 7 - OpenShift Serverless - Red Hat AMQ Clients - Red Hat build of Apache Camel - HawtIO 4 - Red Hat build of Apache Camel 4 for Quarkus 3 - Red Hat build of Apicurio Registry 3 - Red Hat Build of Keycloak - Red Hat Enterprise Linux AI (RHEL AI) 3 - Red Hat JBoss Enterprise Application Platform 8 - Red Hat OpenShift AI (RHOAI) - Red Hat OpenShift Dev Spaces - Red Hat Satellite 6 - streams for Apache Kafka 2 Not affected: - Cryostat 4 on RHEL 9 - Red Hat OpenShift AI 2.25 - Red Hat OpenShift Dev Spaces 3.30 - Red Hat JBoss Enterprise Application Platform Expansion Pack - Red Hat OpenShift AI (RHOAI) - Red Hat Satellite 6 ## Remediation Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:68333 Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings. The References section of this erratum contains a download link (you must log in to download the update). https://access.redhat.com/errata/RHSA-2026:66545 Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings. The References section of this erratum contains a download link (you must log in to download the update). https://access.redhat.com/errata/RHSA-2026:66488 Workarounds / mitigations: - Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. ## Package advisory (CVE-2026-59899) Affected packages: - `io.netty:netty-codec-http >= 4.2.0.Final, <= 4.2.15.Final` - `io.netty:netty-codec-http < 4.1.136.Final` Patched in: - `io.netty:netty-codec-http 4.2.16.Final` - `io.netty:netty-codec-http 4.1.136.Final` Source: https://github.com/advisories/GHSA-q4f6-jm68-57ww