OpenLiberty/open-liberty

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Open Liberty is a highly composable, fast to start, dynamic application server runtime environment

Stars: 1.3k
Forks: 673
Open beginner issues: 19
Indexed issues: 2.3k
Avg merge: 3d 18h
Merged PRs (30d): 90

Dominant language: Java
License: EPL-2.0
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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2,269 open issues indexed

autoStart="false" app fails to start if config refreshes after MBean start Open

release bug

OpenLiberty/open-liberty#35833 · 1 assignee · Opened Sep 18, 2026
Update the Swagger UI dependency Open

OpenLiberty/open-liberty#35830 · 1 assignee · Opened Sep 18, 2026
fix mcp-1.0: HTTP/2 connection pool not closed after HTTPS test causes 30s quiesce timeout on server shutdown Open

test bug

OpenLiberty/open-liberty#35827 · 1 comment · 1 assignee · Opened Sep 18, 2026
Design Issue: Transport Config Elements in server.xml Open

OpenLiberty/open-liberty#35820 · 1 assignee · Opened Sep 17, 2026
Session Reaper Race Condition Open

release bug

OpenLiberty/open-liberty#35814 · 1 comment · 1 assignee · Opened Sep 17, 2026
Custom logging format Open

Feature Request: External Opened by external contributor team:Lumberjack

Difficulty 5/5 Over a week Newbie friendliness 45/100

OpenLiberty/open-liberty#35812 · 3 comments · Opened Sep 17, 2026
Fix race condition in TwoWayStream onCompleted Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

OpenLiberty/open-liberty#35810 · Opened Sep 17, 2026
Automate PTC Pen Test setup for Liberty Container, On-prem and tWAS Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

OpenLiberty/open-liberty#35809 · Opened Sep 17, 2026
JAX-WS: Neethi upgrade Java 2 sec fix Open

in:Web Services team:Bobcats

OpenLiberty/open-liberty#35807 · 1 assignee · Opened Sep 17, 2026
FAT failure: JSFHtmlUnit.testUserAgentNeedsUpdateFalseCondition fails in non-US locales Open

in:Web Components team:Sirius

OpenLiberty/open-liberty#35805 · 1 assignee · Opened Sep 16, 2026
Netty: remove beta checks when ready to GA Open

in:Transport team:Sirius

Difficulty 3/5 1-2 days Newbie friendliness 35/100

OpenLiberty/open-liberty#35801 · Opened Sep 16, 2026
Re-attempt coordinator registration on retried server request Open

release bug

OpenLiberty/open-liberty#35800 · 1 assignee · Opened Sep 16, 2026
Prevent transaction stranding during server quiesce Open

release bug

OpenLiberty/open-liberty#35799 · 1 assignee · Opened Sep 16, 2026
Netty: Allow Content Length Greater than Integer.MAX_VALUE Open

in:Transport team:Sirius

OpenLiberty/open-liberty#35795 · 1 assignee · Opened Sep 16, 2026
Clean Up Netty Metric Tests Post GA Open

in:Transport team:Sirius

Difficulty 3/5 1-2 days Newbie friendliness 45/100

OpenLiberty/open-liberty#35784 · Opened Sep 15, 2026
Fix the config examples in the MCP blog post Open

OpenLiberty/open-liberty#35783 · 1 comment · 1 assignee · Opened Sep 15, 2026
BETA BLOG - Netty on Open Liberty Open

Blog in:Transport target:260011-beta target:beta team:Sirius

OpenLiberty/open-liberty#35782 · 1 assignee · Opened Sep 15, 2026
Test Failure : Intermittent Test failure in MaxMessageSizeLimitTests.testBoundary_greaterThan_2GB_Chunk_IsRejected with Connection refused Open

in:Transport team:Sirius

OpenLiberty/open-liberty#35781 · 1 assignee · Opened Sep 15, 2026
Classloader Introspector: Dump App classloaders, Thread context classloaders (TCCL) and Shared libraries Open

OpenLiberty/open-liberty#35771 · 1 assignee · Opened Sep 14, 2026
Create read and write timeout tests for netty / chfw Open

in:Transport team:Sirius

OpenLiberty/open-liberty#35768 · 1 assignee · Opened Sep 14, 2026
Http connection drop since 26.0.0.8 Open

Opened by external contributor release bug

OpenLiberty/open-liberty#35757 · 1 assignee · Opened Sep 11, 2026
Test Failure: io.openliberty.microprofile.telemetry.internal.config_fat.TelemetryMisconfigTest.testNotKnownEndpoint_EE10_FEATURES_MicroProfile_61 Open

team:Lumberjack

OpenLiberty/open-liberty#35753 · 1 assignee · Opened Sep 10, 2026
Test Failure: io.openliberty.microprofile.telemetry.internal.suite.FATSuite.testExceptionRecorded_EE10_FEATURES_MicroProfile_71 Open

team:Lumberjack

Difficulty 3/5 1-2 days Newbie friendliness 45/100

OpenLiberty/open-liberty#35752 · Opened Sep 10, 2026
Test Failure: com.ibm.ws.logging.fat.HandlerTest.testAccessLogSource Open

team:Lumberjack

OpenLiberty/open-liberty#35751 · 1 comment · 1 assignee · Opened Sep 10, 2026
featureUtility: raw NumberFormatException instead of CWWKF1368E when http_proxy/https_proxy has a trailing slash Open

in:Install Opened by external contributor release bug

OpenLiberty/open-liberty#35747 · 1 comment · 1 assignee · Opened Sep 10, 2026
Add realmName and realmIdentifier attributes to mpJwt element Open

OpenLiberty/open-liberty#35741 · 1 assignee · Opened Sep 9, 2026
Netty: Can we combine the `io.openliberty.io.netty` and `io.openliberty.io.netty.ssl` bundles Open

in:Transport team:Sirius

Difficulty 3/5 1-2 days Newbie friendliness 55/100

OpenLiberty/open-liberty#35736 · Opened Sep 9, 2026
`mcp-1.0` does not expose a session or tool-call telemetry endpoint Open

enhancement Opened by external contributor

Difficulty 5/5 Over a week Newbie friendliness 35/100

OpenLiberty/open-liberty#35728 · Opened Sep 9, 2026
MCP `initialize` request returns HTTP 406 when `Accept` header is `application/json` only Open

Opened by external contributor release bug

Difficulty 3/5 1-2 days Newbie friendliness 55/100

OpenLiberty/open-liberty#35727 · 1 comment · Opened Sep 9, 2026
Zero-argument `@Tool` method causes subsequent tools to be silently dropped from `tools/list` Open

Opened by external contributor release bug

OpenLiberty/open-liberty#35726 · 1 assignee · Opened Sep 9, 2026
Missing client binding schema files from dev/api/ibm/schema Open

release bug

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

OpenLiberty/open-liberty#35714 · 2 comments · Opened Sep 8, 2026
microdnf update fails, because 26.0.0.8-kernel-slim-java25-openj9-ubi-minimal contains rhel package (iptables-nft-1.8.11-16.el10_2.aarch64) Open

Opened by external contributor release bug

OpenLiberty/open-liberty#35713 · 4 comments · 1 assignee · Opened Sep 8, 2026
Intermittent ORB initialization failure with ClassNotFoundException for org.apache.yoko.orb.CORBA.ORB Open

release bug

OpenLiberty/open-liberty#35712 · 1 assignee · Opened Sep 8, 2026
Increase Keycloak container startup for MCP tests Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

OpenLiberty/open-liberty#35708 · Opened Sep 8, 2026
testToolCallDuration fails intermittently with metric duration marginally below 1500ms floor Open

release bug

Difficulty 1/5 Under an hour Newbie friendliness 85/100

OpenLiberty/open-liberty#35704 · 1 comment · Opened Sep 7, 2026
Persistence 3.2/Data 1.1: NullPointerException in InMemoryUrlStreamHandler$PsURLConnection during persistence unit initialization Open

Opened by external contributor

Difficulty 4/5 3-5 days Newbie friendliness 48/100

OpenLiberty/open-liberty#35697 · 2 comments · Opened Sep 4, 2026
Update faces-4.1 to MyFaces 4.1.4 Open

Feature Request: External in:Web Components Opened by external contributor team:Sirius

OpenLiberty/open-liberty#35696 · 2 assignees · Opened Sep 4, 2026
BETA BLOG - Support Added for Configuring Enterprise Beans Quiesce Behavior Open

Blog target:260010-beta target:beta

Difficulty 1/5 Under an hour Newbie friendliness 65/100

OpenLiberty/open-liberty#35693 · Opened Sep 3, 2026
Clean up `McpClient` Open

tech debt

Difficulty 5/5 Over a week Newbie friendliness 38/100

OpenLiberty/open-liberty#35692 · Opened Sep 3, 2026
GA BLOG - Support for Java 27 Open

Blog target:260010 target:ga

OpenLiberty/open-liberty#35676 · 1 assignee · Opened Sep 2, 2026
[gendoc] httpSessionDatabase page missing useMultiRowSchema prerequisite and Db2 applicability for rowSizeLimit Open

release bug

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

OpenLiberty/open-liberty#35669 · Opened Sep 1, 2026
skipEncodedCharVerification is ignored during AsyncContext.dispatch Open

in:Web Components Opened by external contributor release bug team:Sirius

OpenLiberty/open-liberty#35666 · 1 comment · 1 assignee · Opened Sep 1, 2026
JwtBuilder Workload Identity and JWK Rotation Open

Aha Idea Design Approval Request Design Socialized Epic Feature ID Required In Progress in:Security target:260011-beta target:beta

OpenLiberty/open-liberty#35645 · 6 comments · 1 assignee · Opened Aug 27, 2026
GA BLOG -MCP Server (`mcp-1.0`) is now GA in Open Liberty 26.0.0.9 Open

Blog target:26009 target:ga

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

OpenLiberty/open-liberty#35641 · Opened Aug 27, 2026
SVT:Improve serviceability and diagnostic visibility for requests that include the $WSSP header originating from non-sensitive (untrusted) IP addresses Open

Opened by external contributor serviceability SVT

OpenLiberty/open-liberty#35635 · 1 assignee · Opened Aug 26, 2026
Feature Test Summary - Enhance Quiesce for resources to remain available for applications stop Open

FAT complete Feature Test Summary

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OpenLiberty/open-liberty#35634 · Opened Aug 26, 2026
GA BLOG - Protected Resource Metadata for `openidConnectClient` Open

Blog target:26009 target:ga

Difficulty 1/5 Under an hour Newbie friendliness 68/100

OpenLiberty/open-liberty#35632 · Opened Aug 26, 2026
Enhance Liberty's ACME feature to support External Account Binding (EAB) - RFC 8555 S.7.3.4 Open

Aha Idea Epic Feature

Difficulty 4/5 3-5 days Newbie friendliness 55/100

OpenLiberty/open-liberty#35617 · Opened Aug 26, 2026
SAML redirect page blocked by Content Security Policy inline event-handler restriction Open

OpenLiberty/open-liberty#35609 · 1 assignee · Opened Aug 24, 2026
Fix SAML decoder using deprecated setHttpServletRequest API Open

OpenLiberty/open-liberty#35608 · 1 assignee · Opened Aug 24, 2026

OpenLiberty/open-liberty

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