JBoss Enterprise Application Platform 8.1 Update 6.1 Release Notes
In order to better meet customer expectations, micro releases for JBoss EAP 8 have been discontinued and replaced with updates delivered on a repeating schedule.
Each new update will contain a number of bug fixes for customer reported issues and potentially a number of security fixes. We expect that the updates will substantially reduce the number of individual patches that we produce and that customers must manage to keep their installations up to date.
This update includes all fixes and changes from JBoss Enterprise Application Platform 8.1 Update 6
Download This content is not included.JBoss Enterprise Application Platform 8.1 Update 6.1
This update includes fixes for the following security related issues:
| ID | Component | Impact | Summary |
|---|---|---|---|
| CVE-2026-28369 | Server | Important | undertow-core: Undertow: Request Smuggling via Malformed HTTP Request Headers [eap-8.1.z] |
| CVE-2026-1605 | Server | Important | jetty-server: Eclipse Jetty: Denial of Service due to unreleased JDK Inflater from compressed HTTP requests [eap-8.1.z] |
| CVE-2026-28367 | Server | Important | undertow-core: Undertow: Request smuggling via \r\r\r as a header block terminator [eap-8.1.z] |
| CVE-2026-28368 | Server | Important | undertow-core: Undertow: Request smuggling via inconsistent header parsing [eap-8.1.z] |
This update includes the following bug fixes or changes:
| ID | Component | Summary |
|---|---|---|
| This content is not included.JBEAP-32599 | Clustering | DATAGRID 8.6.0: ISPN000374: No such template 'org.infinispan.DIST_SYNC' |
| This content is not included.JBEAP-32341 | Clustering | Node.getSocketAddress() always returns null |
| This content is not included.JBEAP-32308 | JDR | jdr.sh fails to start embedded server when Elytron encrypted expressions is used in system-properties [details] |
| This content is not included.JBEAP-33277 | Undertow | NoSuchMethodError: io/undertow/servlet/api/ServletSessionConfig.setSecure |
| This content is not included.JBEAP-33177 | Undertow | This content is not included.UNDERTOW-2763 - As per RFC9112 reason-phrase is optional in HTTP 1.1 responses |
| This content is not included.JBEAP-30645 | Undertow | This content is not included.UNDERTOW-2545 - AJP write-timeout can be calculated incorrectly, leading to erroneous write-timeout |
| This content is not included.JBEAP-30995 | Undertow | This content is not included.UNDERTOW-2611 - Ensure max-request-size of a Multipart servlet can override a listener max-post-size |
| This content is not included.JBEAP-31419 | Undertow | This content is not included.UNDERTOW-2616 - request.getParts should throw unwrapped IOException |
| This content is not included.JBEAP-32265 | Undertow | This content is not included.UNDERTOW-2659 - remove unnecessary exception wrapping in MultiPart |
Installation
Archive / zip / installer based installations
Note: This update zip should only be applied to installer or zip-based installations.
See the documentation: JBoss EAP 8.1 update methods
RPM installations
See the documentation: Updating an RPM installation
OpenShift Container installations
Update the containers to use the latest tag., to be current on OpenJDK and RHEL fixes.
Notes
- Windows Server 2025 was added as a tested configuration as of JBoss EAP 8.1 Update 4.
- The EAP natives for s390x platform (IBM zSeries) are only supported in the OpenShift environment on IBM zSeries, i.e bare metal installations on IBM zSeries are not supported.
- Some JBoss EAP image templates depend on other products that may not have a s390x build, see here for more details
- Red Hat Insights is available for JBoss EAP 8 and accessible on the This content is not included.Red Hat Hybrid Cloud Console, see more details.
- Deprecated in Red Hat Enterprise Application Platform (EAP) 8