Red Hat Product Errata RHSA-2026:18055 - Security Advisory Issued: 2026-05-18 Updated: 2026-05-18 RHSA-2026:18055 - Security Advisory Overview Updated Packages Synopsis Important: Red Hat JBoss Enterprise Application Platform 8.1.6 security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic A security update is now available for Red Hat JBoss Enterprise Application Platform 8.1 for Red Hat Enterprise Linux 9. 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. Description Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly application runtime. This release of Red Hat JBoss Enterprise Application Platform 8.1.6 serves as a replacement for Red Hat JBoss Enterprise Application Platform 8.1.5, and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.6 Release Notes for information about the most significant bug fixes and enhancements included in this release. Security Fix(es): bcprov-jdk18on: GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813) bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813) bouncycastle: BC-JAVA: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (CVE-2026-3505) bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid (CVE-2026-5588) bcprov-ext-jdk15on: LDAP injection vulnerability in LDAPStoreHelper.java (CVE-2026-0636) bcprov-jdk12: private key leakage via non-constant time comparisons (CVE-2026-5598) netty-codec- http: Netty: Denial of Service via HTTP/2 CONTINUATION frame flood (CVE-2026-33871) netty-codec- http: Netty: Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding extension values (CVE-2026-33870) artemis-server: Apache Artemis, Apache ActiveMQ Artemis: Message injection and exfiltration due to missing authentication (CVE-2026-27446) org.hibernate.orm/hibernate-c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects (CVE-2026-27830) org.keycloak-keycloak-parent: Minimatch: Denial of Service via catastrophic backtracking in glob expressions (CVE-2026-27904) mchange-commons-java: mchange-commons-java: Arbitrary code execution via JNDI dereferencing of crafted objects (CVE-2026-27727) io.hawt-project: minimatch: Denial of Service via specially crafted glob patterns (CVE-2026-26996) wildfly-elytron-integration: Wildfly Elytron Brute Force Attack via CLI (CVE-2025-23368) 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 8.1 for RHEL 9 x86_64 Fixes BZ - 2337621 - CVE-2025-23368 org.wildfly.core:wildfly-elytron-integration: Wildfly Elytron Brute Force Attack via CLI BZ - 2441268 - CVE-2026-26996 minimatch: minimatch: Denial of Service via specially crafted glob patterns BZ - 2442671 - CVE-2026-27727 com.mchange/mchange-commons-java: mchange-commons-java: Arbitrary code execution via JNDI dereferencing of crafted objects BZ - 2442908 - CVE-2026-27830 c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects BZ - 2442922 - CVE-2026-27904 minimatch: Minimatch: Denial of Service via catastrophic backtracking in glob expressions BZ - 2444320 - CVE-2026-27446 org.apache.artemis:artemis-server: org.apache.activemq:artemis-server: Apache Artemis, Apache ActiveMQ Artemis: Message injection and exfiltration due to missing authentication BZ - 2452453 - CVE-2026-33870 io.netty/netty-codec-http: Netty: Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding extension values BZ - 2452456 - CVE-2026-33871 netty: Netty: Denial of Service via HTTP/2 CONTINUATION frame flood BZ - 2458634 - CVE-2026-5588 bouncycastle: BC-JAVA: PKIX draft CompositeVerifier accepts empty signature sequence as valid BZ - 2458635 - CVE-2026-5598 bouncycastle: BC-JAVA: private key leakage via non-constant time comparisons BZ - 2458638 - CVE-2026-3505 bouncycastle: BC-JAVA: unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion BZ - 2458640 - CVE-2025-14813 bouncycastle: BC-JAVA: GOSTCTR implementation unable to process more than 255 blocks correctly BZ - 2458641 - CVE-2026-0636 bouncycastle: BC-JAVA: LDAP injection vulnerability in LDAPStoreHelper.java JBEAP-32075 - Tracker bug for the EAP 8.1.6 release for RHEL-9 JBEAP-31314 - (8.1.z) Upgrade OpenSSL Natives from 2.2.0.Final-redhat-00002 to 2.3.0.Final-redhat-00001 JBEAP-31468 - [GSS](8.1.z) Upgrade WildFly Http Client from 2.1.3.Final-redhat-00001 to 2.1.4.Final-redhat-00001 JBEAP-31868 - (8.1.z) Upgrade WildFly Core from 27.1.6.Final-redhat-00001 to 27.1.7.Final-redhat-00001 JBEAP-31874 - (8.1.z) Upgrade HAL from 3.7.16.Final-redhat-00001 to version 3.7.17.Final-redhat-00001 JBEAP-32025 - (8.1.z) Upgrade JBoss EAP to 8.1.1.GA-redhat-00013 in 8.1 Update 6 JBEAP-32028 - (8.1.z) Upgrade jboss metadata from 16.0.0.Final-redhat-00001 to 16.1.0.Final-redhat-00001 JBEAP-32064 - (8.1.z) Upgrade HAL from 3.7.17.Final-redhat-00001 to 3.7.18.Final-redhat-00001 JBEAP-32078 - [GSS](8.1.z) Upgrade hibernate ORM from 6.6.42.Final-redhat-00001 to 6.6.44.Final-redhat-00001 JBEAP-32084 - (8.1.z) Upgrade JBoss EAP to 8.1.1.GA-redhat-00015 in 8.1 Update 6 JBEAP-32123 - JBoss EAP 8.1 Update 6 Release JBEAP-32209 - (8.1.z) Upgrade WildFly Core from 27.1.7.Final-redhat-00001 to 27.1.8.Final-redhat-00001 JBEAP-32212 - (8.1.z) Update EAP channel to use wildfly-ee-feature-pack-product-conf x.x.x in EAP 8.1 Update 6 JBEAP-32266 - (8.1.z) Upgrade hibernate ORM from 6.6.44.Final-redhat-00001 to 6.6.45.Final-redhat-00001 JBEAP-32293 - (8.1.z) Upgrade Artemis to 2.40.0.redhat-00012 JBEAP-32295 - (8.1.z) Upgrade HAL from 3.7.17.Final-redhat-00001 to version 3.7.19.Final-redhat-00001 JBEAP-32339 - (8.1.z) Upgrade JBoss EAP to 8.1.1.GA-redhat-00016 in 8.1 Update 6 JBEAP-32350 - (8.1.z) Upgrade WildFly OpenSSL from 2.2.5.Final-redhat-00002 to 2.3.0.Final-redhat-00001 JBEAP-32415 - (8.1.z) Upgrade WildFly Core from 27.1.8.Final-redhat-00001 to 27.1.9.Final-redhat-00001 JBEAP-32481 - (8.1.z) Upgrade yasson from 3.0.4.redhat-00006 to 3.0.4.redhat-00007 JBEAP-29032 - [GSS](8.1.z) JBoss EAP 8 overrides custom favicon.ico during RPM update JBEAP-32486 - (8.1.z) Upgrade JBoss EAP to 8.1.1.GA-redhat-00017 in 8.1 Update 6 JBEAP-32544 - (8.1.z) Upgrade WildFly Core from 27.1.9.Final-redhat-00001 to 27.1.9.Final-redhat-00002 JBEAP-32601 - (8.1.z) Upgrade netty from 4.1.130.Final-redhat-00001 to 4.1.132.Final-redhat-00001 JBEAP-32687 - (8.1.z) Upgrade hibernate ORM from 6.6.45.Final-redhat-00001 to 6.6.48.Final-redhat-00001 JBEAP-32755 - [GSS](8.1.z) HHH-20287 DataException ( Parameter is not set) when updating only the version of an Entity with a PartitionKey #12093 JBEAP-32773 - [PST](8.1.z) Upgrade bouncycastle from 1.83.0.redhat-00001 to 1.84+ CVEs CVE-2025-14813 CVE-2025-23368 CVE-2026-0636 CVE-2026-3505 CVE-2026-5588 CVE-2026-5598 CVE-2026-26996 CVE-2026-27446 CVE-2026-27727 CVE-2026-27830 CVE-2026-27904 CVE-2026-33870 CVE-2026-33871 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/release_notes_for_red_hat_jboss_enterprise_application_platform_8.1/index https://docs.redhat.com/en/documentation/red_hat_jboss_enterprise_application_platform/8.1/html/red_hat_jboss_enterprise_application_platform_installation_methods/index https://access.redhat.com/articles/7134190 Note: More recent versions of these packages may be available. Click a package name for more details. JBoss Enterprise Application Platform 8.1 for RHEL 9 SRPM eap8-activemq-artemis-2.40.0-6.redhat_00012.1.el9eap.src.rpm SHA-256: 2548191c18215b27868335c352f6ecc57dcf1af6aa6e9f7482b26875a1822fad eap8-angus-2.0.5-1.redhat_00001.1.el9eap.src.rpm SHA-256: 174e779f0288ad00372639ebf2ae1db2ad68b7401de6abd37429d0e2c23dd82b eap8-angus-activation-2.0.3-1.redhat_00001.1.el9eap.src.rpm SHA-256: 8cfe1a2caca80f73b808652761fe8665045eb6d7572f5142421368398b476df9 eap8-bouncycastle-1.84.0-1.redhat_00001.1.el9eap.src.rpm SHA-256: ae3fa7111f4ec394bd1f1e8c365f837013741990c0034f94bef05604da4e3320 eap8-eap-product-conf-parent-801.6.0-1.GA_redhat_00001.1.el9eap.src.rpm SHA-256: 5dc3e560ce58ef3a16df45b5ba03f94a7d700fe06f243aaccc2750369e34f83a eap8-guava-failureaccess-1.0.3-1.redhat_00001.1.el9eap.src.rpm SHA-256: 0318b267cb983676a62a1f282d954f453e16fcb3c764975b10cfad251381a617 eap8-guava-libraries-33.0.0-3.jre_redhat_00004.1.el9eap.src.rpm SHA-256: a5b16dd129c5ec1dce232c028e00292900c2894ea04de2fb3c19d454dbcbcd72 eap8-hal-console-3.7.19-1.Final_redhat_00001.1.el9eap.src.rpm SHA-256: 7dd1ab3d647dede803206217f5e3c579c693df76340422b9b27463a2bc9f6fbd eap8-hibernate-6.6.48-1.Final_redhat_00001.1.el9eap.src.rpm SHA-256: e48d5c9e13af370fd8785d40ecb0ae84c8a665d78b4fa142431059a992be5f32 eap8-hibernate-search-7.2.6-1.Final_redhat_00001.1.el9eap.src.rpm SHA-256: bc1d6c78b3c41d588fb85410573ffaf6240249b144335f330be1cd4fe054c35d eap8-jakarta-activation-2.1.4-1.redhat_00001.1.el9eap.src.rpm SHA-