EUVD-2026-87751

Netty's STOMP codec io.netty:netty-codec-stomp contains a ByteBuf leak in StompSubframeDecoder. Once a frame's declared content-length has been fully read, the decoder allocates a chunk buffer from the channel allocator and parks it in an instance field while waiting for the single NUL byte that...

CVE-2026-100656

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CVE-2026-100656 Netty HttpServerCodec Unbounded Queue Growth via HTTP/1.1 Pipelining

Netty io.netty:netty-codec-http contains an unbounded per-connection queue growth flaw in HttpServerCodec. The codec tracks the HTTP method of each still-unanswered pipelined request; the first 32 entries are bit-packed into a single long, but every additional entry is appended to...

CVE-2026-100656

The Netty library (io.netty:netty-codec-http ) contains an unbounded per-connection queue growth flaw in HttpServerCodec . The component tracks HTTP methods of unanswered pipelined requests; while the first 32 entries are bit-packed, additional entries are appended to an ArrayDeque (methodOverflo...

EUVD-2026-87750

Netty io.netty:netty-codec-http contains an unbounded per-connection queue growth flaw in HttpServerCodec. The codec tracks the HTTP method of each still-unanswered pipelined request; the first 32 entries are bit-packed into a single long, but every additional entry is appended to...

CVE-2026-100656

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CVE-2026-100656

Removed by vendor...

CVE-2026-100655

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CVE-2026-100655

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CVE-2026-100655 Netty before 4.1.138.Final Denial of Service via SpdySessionHandler

Netty io.netty:netty-codec-http versions up to and including 4.1.137.Final and from 4.2.0.Final through 4.2.17.Final accept an unlimited number of concurrent remote-initiated SPDY streams: SpdySessionHandler defaults localConcurrentStreams to Integer.MAXVALUE and exposes no API to change it. A...

CVE-2026-100655

A flaw in Netty (specifically io.netty:netty-codec-http) allows a remote attacker to cause a Denial of Service (DoS) by exhausting server memory. The SpdySessionHandler defaults the localConcurrentStreams limit to Integer.MAX_VALUE without providing an API to restrict it. An attacker can open a S...

EUVD-2026-87749

Netty io.netty:netty-codec-http versions up to and including 4.1.137.Final and from 4.2.0.Final through 4.2.17.Final accept an unlimited number of concurrent remote-initiated SPDY streams: SpdySessionHandler defaults localConcurrentStreams to Integer.MAXVALUE and exposes no API to change it. A...

CVE-2026-100655

Removed by vendor...

CVE-2026-100666: Inconsistent Interpretation of HTTP Requests

Netty's HttpServerCodec io.netty:netty-codec-http in versions 4.2.0.Final through 4.2.16.Final and in versions up to and including 4.1.136.Final pairs each outbound response with an inbound request by calling pollMethod once per response, including for 1xx informational responses. If a client...

CVE-2026-100662: Uncontrolled Resource Consumption

Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.0.Final through 4.2.17.Final contain an uncontrolled resource consumption vulnerability in the QPACK encoder-stream instruction decoder QpackEncoderHandler, installed on the peer-initiated unidirectional QPACK encoder stream, type 0x02...

io.netty/netty-transport-sctp: Netty: Denial of Service via SCTP memory exhaustion

A flaw was found in Netty. The SctpMessageCompletionHandler component, which handles Stream Control Transmission Protocol SCTP messages, limits incomplete messages and fragment counts but does not properly limit maxBufferedBytes. An unauthenticated remote attacker could send specially crafted,...

io.netty/netty-handler: Netty: SNI Routing Bypass via Fragmented TLS ClientHello Causing Fallback to Default SslContext

A flaw was found in Netty, an asynchronous, event-driven network application framework. An unauthenticated remote attacker can exploit fragmented Transport Layer Security TLS ClientHello messages to bypass the Server Name Indication SNI routing mechanism. This forces a fallback to a less secure...

io.netty/netty-codec-xml: Netty: Denial of Service via CPU Exhaustion in XmlFrameDecoder

A flaw was found in Netty's XmlFrameDecoder component. An unauthenticated remote attacker could send specially crafted XML closing-tag sequences. This could cause the system to repeatedly rescan accumulated data, leading to high CPU utilization and a denial of service DoS...

io.netty/netty-handler: Netty: TLS hostname verification bypass via OpenSSL client path misconfiguration

A flaw was found in Netty io.netty:netty-handler. When using the SslProvider.OPENSSL client path with a plain X509TrustManager and without Unsafe-based trust-manager wrapping Java 25+, TLS hostname verification is disabled. This misconfiguration allows a man-in-the-middle attacker to present a...

Security Bulletin: DataStage on Cloud Pak for Data has several vulnerabilities due to open source software

Summary Open source packages are used as part of the overall processing in DataStage on Cloud Pak for Data. Vulnerability Details CVEID:CVE-2026-32282 DESCRIPTION: On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the...