Release v4.9.0

Full Changelog: https://github.com/Activiti/Activiti/compare/7.21.0-rc.217...7.21.0-rc.218

Full Changelog: https://github.com/Activiti/Activiti/compare/7.21.0-rc.216...7.21.0-rc.217

Full Changelog: https://github.com/Activiti/Activiti/compare/7.21.0-rc.215...7.21.0-rc.216

Full Changelog: https://github.com/Activiti/Activiti/compare/7.21.0-rc.214...7.21.0-rc.215

• CVE-2026-42586 (netty-codec-redis)
• CVE-2026-42578 (netty-handler-proxy)
• CVE-2026-42587 (netty-codec-http, netty-codec-http2)
• CVE-2026-41417 (netty-codec-http)
• CVE-2026-42581 (netty-codec-http)
• CVE-2026-42580 (netty-codec-http)
• CVE-2026-42585 (netty-codec-http)
• CVE-2026-42579 (netty-codec-dns)
• CVE-2026-42582 (netty-codec-http3)
• CVE-2026-42583 (netty-codec, netty-codec-compression)
• CVE-2026-42584 (netty-codec-http)
• CVE-2026-XXXXX (netty-codec-mqtt)

• Fix IndexOutOfBoundsException in StompSubframeDecoder on heartbeat by @daguimu in https://github.com/netty/netty/pull/16539
• Auto-port 4.1: Fix implementation of strerror_r_xsi for GNU by @netty-project-bot in https://github.com/netty/netty/pull/16561
• Auto-port 4.1: Replace usage of strerror with thread-safe alternative by @netty-project-bot in https://github.com/netty/netty/pull/16555
• Auto-port 4.1: Kqueue: sendfile EINTR doesn't advance offset — data duplication by @netty-project-bot in https://github.com/netty/netty/pull/16554
• Auto-port 4.1: Avoid leak in PemReader on OutOfDirectMemoryError by @netty-project-bot in https://github.com/netty/netty/pull/16576
• Auto-port 4.1: Native DNS resolver: Guard against malloc failures by @netty-project-bot in https://github.com/netty/netty/pull/16584
• Auto-port 4.1: Include user properties and subscription IDs in MqttProperties#isEmpty by @netty-project-bot in https://github.com/netty/netty/pull/16582
• Auto-port 4.1: Fix parsing HTTP chunks with multiple extensions by @netty-project-bot in https://github.com/netty/netty/pull/16588
• Auto-port 4.1: Stabilize read-only toStringMultipleThreads1 by @netty-project-bot in https://github.com/netty/netty/pull/16610
• Auto-port 4.1: Epoll: Cleanup code to always return negative value on failure by @netty-project-bot in https://github.com/netty/netty/pull/16601
• Auto-port 4.1: Stabilize more AbstractByteBufTests by @netty-project-bot in https://github.com/netty/netty/pull/16613
• Auto-port 4.1: Stabilize testSessionInvalidate for Conscrypt by @netty-project-bot in https://github.com/netty/netty/pull/16616
• Auto-port 4.1: Native transports: Correctly create pipe when pipe2 is not supported by @netty-project-bot in https://github.com/netty/netty/pull/16598
• Use stream error for maxContentLength exceeded in InboundHttp2ToHttpAdapter by @daguimu in https://github.com/netty/netty/pull/16558
• Fix shutdownInput bug in kqueue for empty recv buffer (#16630) by @normanmaurer in https://github.com/netty/netty/pull/16638
• Auto-port 4.1: Kqueue: Fix usage of LOCAL_PEERPID by @netty-project-bot in https://github.com/netty/netty/pull/16646
• Auto-port 4.1: HTTP2: Ensure HTTP2 preface is always send as first message by @netty-project-bot in https://github.com/netty/netty/pull/16642
• Auto-port 4.1: Propagate exceptions from inner threads in buffer tests by @netty-project-bot in https://github.com/netty/netty/pull/16652
• Auto-port 4.1: Add maxFrameLength support to ProtobufVarint32FrameDecoder by @netty-project-bot in https://github.com/netty/netty/pull/16658
• Auto-port 4.1: Bump up netty-tcnative to 2.0.76.Final by @netty-project-bot in https://github.com/netty/netty/pull/16672
• HTTP2: Ensure HTTP2 preface is always send as first message (also on … by @chrisvest in https://github.com/netty/netty/pull/16675
• Improve flaky NioSocketChannelTest (#16679) by @normanmaurer in https://github.com/netty/netty/pull/16681
• Deprecate ObjectCleaner and remove usage (#16685) by @chrisvest in https://github.com/netty/netty/pull/16694
• Auto-port 4.1: Update to netty-tcnative 2.0.77.Final by @netty-project-bot in https://github.com/netty/netty/pull/16695
• Avoid NPE in JdkSslServerContext when TrustManagerFactory returns null by @daguimu in https://github.com/netty/netty/pull/16691
• Avoid NPE in JdkSslClientContext when TrustManagerFactory returns null by @daguimu in https://github.com/netty/netty/pull/16690
• Auto-port 4.1: Avoid TCPFastOpen in KQueueCompositeBufferGatheringWriteTest by @netty-project-bot in https://github.com/netty/netty/pull/16699
• Auto-port 4.1: SCTP: Correctly handle SO_BACKLOG by @netty-project-bot in https://github.com/netty/netty/pull/16715
• Fix DiscardClient hang under -Dssl by using a client SSL context by @daguimu in https://github.com/netty/netty/pull/16717
• Auto-port 4.1: Consolidate fake exceptions in HTTP/2 tests into Http2TestUtil by @netty-project-bot in https://github.com/netty/netty/pull/16725
• Auto-port 4.1: Activate noPrintGC by default by @netty-project-bot in https://github.com/netty/netty/pull/16735
• Merge commit from fork by @normanmaurer in https://github.com/netty/netty/pull/16742

• @daguimu made their first contribution in https://github.com/netty/netty/pull/16539

Full Changelog: https://github.com/netty/netty/compare/netty-4.1.132.Final...netty-4.1.133.Final

• CVE-2026-42586 (netty-codec-redis)
• CVE-2026-42578 (netty-handler-proxy)
• CVE-2026-42577 (netty-transport-native-epoll)
• CVE-2026-42587 (netty-codec-http, netty-codec-http2)
• CVE-2026-41417 (netty-codec-http)
• CVE-2026-42581 (netty-codec-http)
• CVE-2026-42580 (netty-codec-http)
• CVE-2026-42585 (netty-codec-http)
• CVE-2026-42579 (netty-codec-dns)
• CVE-2026-42582 (netty-codec-http3)
• CVE-2026-42583 (netty-codec, netty-codec-compression)
• CVE-2026-42584 (netty-codec-http)
• CVE-2026-XXXXX (netty-codec-mqtt)

• Kqueue: sendfile EINTR doesn't advance offset — data duplication by @normanmaurer in https://github.com/netty/netty/pull/16544
• Replace usage of strerror with thread-safe alternative by @normanmaurer in https://github.com/netty/netty/pull/16547
• Fix implementation of strerror_r_xsi for GNU by @normanmaurer in https://github.com/netty/netty/pull/16546
• Lazy init ArrayList in DefaultHeaders.getAll by @doom369 in https://github.com/netty/netty/pull/16526
• Less logging in AWS-LC build by @chrisvest in https://github.com/netty/netty/pull/16565
• Ensure the CRYPTO_BUFFER_POOL is also freed when we fail creating the SSLContext by @normanmaurer in https://github.com/netty/netty/pull/16545
• Auto-port 4.2: Fix IndexOutOfBoundsException in StompSubframeDecoder on heartbeat by @netty-project-bot in https://github.com/netty/netty/pull/16543
• Avoid leak in PemReader on OutOfDirectMemoryError by @raipc in https://github.com/netty/netty/pull/16551
• IoUring: Disable test while we debug to unblock other builds by @normanmaurer in https://github.com/netty/netty/pull/16581
• Include user properties and subscription IDs in MqttProperties#isEmpty by @ShadowySpirits in https://github.com/netty/netty/pull/16575
• Native DNS resolver: Guard against malloc failures by @normanmaurer in https://github.com/netty/netty/pull/16559
• Auto-port 4.2: Increase timeouts for QuicChannelConnectTest by @netty-project-bot in https://github.com/netty/netty/pull/16578
• Fix parsing HTTP chunks with multiple extensions by @chrisvest in https://github.com/netty/netty/pull/16579
• Bump org.codehaus.plexus:plexus-utils from 3.4.2 to 4.0.3 in /codec-native-quic by @dependabot[bot] in https://github.com/netty/netty/pull/16572
• Revert to PR build to Ubuntu 22.04 by @chrisvest in https://github.com/netty/netty/pull/16595
• Native transports: Correctly create pipe when pipe2 is not supported by @normanmaurer in https://github.com/netty/netty/pull/16592
• Epoll: Cleanup code to always return negative value on failure by @normanmaurer in https://github.com/netty/netty/pull/16591
• Fix component search fast path by @yawkat in https://github.com/netty/netty/pull/16548
• Stabilize read-only toStringMultipleThreads1 by @chrisvest in https://github.com/netty/netty/pull/16608
• Stabilize more AbstractByteBufTests by @chrisvest in https://github.com/netty/netty/pull/16611
• Remove note about needing 256-bit for PQC by @chrisvest in https://github.com/netty/netty/pull/16605
• Stabilize testSessionInvalidate for Conscrypt by @chrisvest in https://github.com/netty/netty/pull/16615
• Quic: Correctly handle SSL_CTX_new failures by @normanmaurer in https://github.com/netty/netty/pull/16622
• Make LocalIoHandle public by @rdicroce in https://github.com/netty/netty/pull/16621
• Quic: Fix shadowing of variable which leads to incorrectly handling errors by @normanmaurer in https://github.com/netty/netty/pull/16623
• Auto-port 4.2: Use stream error for maxContentLength exceeded in InboundHttp2ToHttpAdapter by @netty-project-bot in https://github.com/netty/netty/pull/16629
• Fix shutdownInput bug in kqueue for empty recv buffer by @chrisvest in https://github.com/netty/netty/pull/16630
• fix FFM address semantics in directBufferAddress by @dreamlike-ocean in https://github.com/netty/netty/pull/16603
• HTTP2: Ensure HTTP2 preface is always send as first message by @normanmaurer in https://github.com/netty/netty/pull/16636
• Move Http2FrameCodecSubClassTest to correct package by @normanmaurer in https://github.com/netty/netty/pull/16640
• Kqueue: Fix usage of LOCAL_PEERPID by @normanmaurer in https://github.com/netty/netty/pull/16637
• Avoid ArrayQueue allocation in HttpServerCodec by @doom369 in https://github.com/netty/netty/pull/16596
• Fix file descriptor reuse bug in kqueue by @chrisvest in https://github.com/netty/netty/pull/16650
• Propagate exceptions from inner threads in buffer tests by @chrisvest in https://github.com/netty/netty/pull/16643
• Add maxFrameLength support to ProtobufVarint32FrameDecoder by @fru1tworld in https://github.com/netty/netty/pull/16633
• Avoid byte[] allocation in DefaultChannelId by @doom369 in https://github.com/netty/netty/pull/16631
• Bump BouncyCastle from 1.83 to 1.84 by @chrisvest in https://github.com/netty/netty/pull/16660
• HTTP2: Ensure HTTP2 preface is always send as first message (also on the server) by @normanmaurer in https://github.com/netty/netty/pull/16667
• Update outdated codec-http3 README.md by @fru1tworld in https://github.com/netty/netty/pull/16665
• Bump up netty-tcnative to 2.0.76.Final by @normanmaurer in https://github.com/netty/netty/pull/16669
• Fix IllegalReferenceCountException in AdaptiveByteBuf.deallocate() by @gzsombor in https://github.com/netty/netty/pull/16654
• Skip VarHandle init when unaligned access is supported by @Songdoeon in https://github.com/netty/netty/pull/16664
• Add generic FileRegion support in io_uring stream channel by @LuciferYang in https://github.com/netty/netty/pull/16571
• ByteBufAllocatorAllocPatternBenchmark: Ensure each index appears exactly once in releaseIndexes by @laosijikaichele in https://github.com/netty/netty/pull/16604
• Improve flaky NioSocketChannelTest by @chrisvest in https://github.com/netty/netty/pull/16679
• Deprecate ObjectCleaner and remove usage by @chrisvest in https://github.com/netty/netty/pull/16685
• Update to netty-tcnative 2.0.77.Final by @normanmaurer in https://github.com/netty/netty/pull/16687
• Avoid TCPFastOpen in KQueueCompositeBufferGatheringWriteTest by @chrisvest in https://github.com/netty/netty/pull/16697
• Update JUnit to 5.14.0 and fix leak scope handling by @yawkat in https://github.com/netty/netty/pull/16680
• Auto-port 4.2: Avoid NPE in JdkSslClientContext when TrustManagerFactory returns null by @netty-project-bot in https://github.com/netty/netty/pull/16702
• Avoid NPE in JdkSslServerContext when TrustManagerFactory returns nul… by @normanmaurer in https://github.com/netty/netty/pull/16700
• IoUring: Fix incorrect assertion which was triggered when two Channel… by @normanmaurer in https://github.com/netty/netty/pull/16705
• Epoll: Correctly delete fd from epoll if there is nothing to handle by @normanmaurer in https://github.com/netty/netty/pull/16689
• Update many dependencies by @chrisvest in https://github.com/netty/netty/pull/16707
• SCTP: Correctly handle SO_BACKLOG by @normanmaurer in https://github.com/netty/netty/pull/16714
• Load BouncyCastle providers independently by @chrisvest in https://github.com/netty/netty/pull/16710
• Add UBI9 devcontainer by @chrisvest in https://github.com/netty/netty/pull/16711
• Consolidate fake exceptions in HTTP/2 tests into Http2TestUtil by @fru1tworld in https://github.com/netty/netty/pull/16712
• Auto-port 4.2: Fix DiscardClient hang under -Dssl by using a client SSL context by @netty-project-bot in https://github.com/netty/netty/pull/16724
• Epoll: Use correct inital EpollIoOps by @normanmaurer in https://github.com/netty/netty/pull/16728
• Activate noPrintGC by default by @chrisvest in https://github.com/netty/netty/pull/16732
• H2: Add test for header value validation by @chrisvest in https://github.com/netty/netty/pull/16737

• @ShadowySpirits made their first contribution in https://github.com/netty/netty/pull/16575
• @fru1tworld made their first contribution in https://github.com/netty/netty/pull/16633
• @gzsombor made their first contribution in https://github.com/netty/netty/pull/16654
• @LuciferYang made their first contribution in https://github.com/netty/netty/pull/16571

Full Changelog: https://github.com/netty/netty/compare/netty-4.2.12.Final...netty-4.2.13.Final

Full Changelog: https://github.com/Activiti/Activiti/compare/7.21.0-rc.213...7.21.0-rc.214

Full Changelog: https://github.com/Activiti/Activiti/compare/7.21.0-rc.212...7.21.0-rc.213