Red Hat Product Errata RHSA-2026:50085 - Security Advisory Issued: 2026-08-04 Updated: 2026-08-04 RHSA-2026:50085 - Security Advisory Overview Synopsis Important: Red Hat JBoss Enterprise Application Platform 8.1.7.1 XP 6.0.5.1 release Type/Severity Security Advisory: Important Topic JBoss EAP XP 6.0.5.1 release on the EAP 8.1 base. See references for release notes. Description A security update is now available for Red Hat JBoss Enterprise Application Platform 8.1.7.1, XP 6.0.5.1. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Security Fix(es): memory exhaustion in io.netty:netty-codec-haproxy (CVE-2026-48059) DNS cache poisoning in io.netty:netty-resolver-dns (CVE-2026-47691) DDoS in io.netty:netty-codec-http2 (CVE-2026-50560) memory exhaustion in io.netty:netty-codec-redis (CVE-2026-50011) memory exhaustion in io.netty:netty-codec-redis (CVE-2026-44250) memory exhaustion in io.netty:netty-codec-redis (CVE-2026-44890) IPv6 subnet filter bypass in io.netty:netty-handler (CVE-2026-44249) request smuggling in io.netty:netty-codec-http (CVE-2026-50020) memory leak in io.netty:netty-codec-haproxy (CVE-2026-44893) TLS hostname verification accidentally disabled in io.netty:netty-handler (CVE-2026-50010) DNS cache poisoning in io.netty:netty-resolver-dns (CVE-2026-45673) excessive memory usage from SNIHandler in io.netty:netty-handler (CVE-2026-45416) file descriptor leak in io.netty:netty-transport-native-epoll and io.netty:netty-transport-native-kqueue (CVE-2026-45536) DNS cache poisoning in io.netty:netty-resolver-dns (CVE-2026-45674) memory exhaustion in io.netty:netty-transport-sctp (CVE-2026-46340) denial of service in io.netty:netty-codec-http2 (CVE-2026-47244) memory exhaustion in io.netty:netty-codec-redis (CVE-2026-48006) memory exhaustion in io.netty:netty-codec-http2 (CVE-2026-48043) netty-codec-http2: Netty: Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution Before applying the update, make sure all previously released errata relevant to your system have been applied. Also, back up your existing installation, including all applications, configuration files, databases and database settings. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Affected Products JBoss Enterprise Application Platform Text-Only Advisories x86_64 Fixes BZ - 2477220 - CVE-2026-42587 netty: io.netty/netty-codec-http: io.netty/netty-codec-http2: Netty: Denial of Service via unbounded memory allocation in HTTP content decompression BZ - 2488053 - CVE-2026-44890 netty-codec-redis: netty-codec-redis: Denial of Service via crafted Redis payloads BZ - 2488062 - CVE-2026-44250 netty-codec-redis: netty-codec-redis: Denial of Service via crafted Redis payload with deeply nested arrays BZ - 2488081 - CVE-2026-44249 netty-handler: netty-handler: IPv6 subnet rule bypass due to incorrect masking operation BZ - 2488383 - CVE-2026-44893 netty-codec-haproxy: Netty-codec-haproxy: Denial of Service via malformed HAProxy message BZ - 2488386 - CVE-2026-45673 netty-resolver-dns: Netty DNS resolver: DNS Cache Poisoning via predictable transaction IDs BZ - 2488388 - CVE-2026-46340 netty-transport-sctp: Netty-transport-sctp: Denial of Service due to unbounded memory growth from SctpMessage fragments BZ - 2488391 - CVE-2026-45416 netty-handler: Netty: Denial of Service due to eager buffer allocation in TLS handshake BZ - 2488394 - CVE-2026-45536 netty-transport-native-epoll: netty-transport-native-kqueue: Netty: Denial of Service due to file descriptor leak in SCM_RIGHTS message handling BZ - 2488399 - CVE-2026-47244 netty-codec-http2: Netty: Denial of Service via uncontrolled HTTP/2 concurrent streams BZ - 2488400 - CVE-2026-45674 netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation BZ - 2488407 - CVE-2026-50560 netty-codec-http2: Netty: Denial of Service due to HTTP/2 max header size handling BZ - 2488413 - CVE-2026-50011 netty-codec-redis: Netty: Denial of Service via malicious Redis array header BZ - 2488421 - CVE-2026-50020 netty-codec-http: Netty: Data manipulation via request-boundary confusion in HttpObjectDecoder BZ - 2488429 - CVE-2026-50010 netty-handler: Netty: Improper trust manager handling leads to hostname verification bypass BZ - 2488433 - CVE-2026-48006 netty-codec-redis: Netty's Lack of Lifecycle Cleanup Leads to Pooled ByteBuf Leak in RedisArrayAggregator BZ - 2488437 - CVE-2026-48059 netty-codec-haproxy: Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol headers BZ - 2488439 - CVE-2026-47691 io.netty/netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records BZ - 2488442 - CVE-2026-48043 netty-codec-http2: netty-codec-http2: Denial of Service due to resource leak JBEAP-33612 - (xp-6.0.z) Upgrade netty from 4.1.133.Final-redhat-00001 to 4.1.135.Final-redhat-00001 CVEs CVE-2026-42587 CVE-2026-44249 CVE-2026-44250 CVE-2026-44890 CVE-2026-44893 CVE-2026-45416 CVE-2026-45536 CVE-2026-45673 CVE-2026-45674 CVE-2026-46340 CVE-2026-47244 CVE-2026-47691 CVE-2026-48006 CVE-2026-48043 CVE-2026-48059 CVE-2026-50010 CVE-2026-50011 CVE-2026-50020 CVE-2026-50560 References https://access.redhat.com/security/updates/classification/#important https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/8.1 https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/8.1/html-single/red_hat_jboss_eap_xp_6.0_release_notes/index The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .