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Withdrawn: CLEANSTART-2026-CL03013 — Netty is an asynchronous, event-driven network application framework

Withdrawn by the publisher.

Affected: CleanStart: apache-hive

Multiple security vulnerabilities affect the apache-hive package. Netty is an asynchronous, event-driven network application framework. See references for individual vulnerability details.

EUVD-2026-339902

fkie_cve-2026-55851

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to (but not including) 4.2.16.Final, and 4.1.0.Final up to (but not including) 4.1.135, the `HAProxyMessageDecoder` in Netty's `codec-haproxy` module performs protocol version detection by reading the 13th byte as a signed Java `byte` and widening it to `int` without masking; a PROXY protocol v2 binary prefix followed by version byte `0xFF` sign-extends to `-1`, collides with the decoder's need-more-data sentinel, and causes `ByteToMessageDecoder` to accumulate inbound bytes in an unbounded `cumulation` buffer until direct memory is exhausted. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

GHSA-q6cq-mhr2-jmr5 — Netty: [codec-haproxy] Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion

Affected: Maven: io.netty:netty-codec-haproxy

The `HAProxyMessageDecoder` in netty's `codec-haproxy` module performs protocol version detection by reading the 13th byte of the inbound stream as a signed Java `byte` and widening it to `int` without masking. When an attacker sends a PROXY protocol v2 binary prefix (`0D 0A 0D 0A 00 0D 0A 51 55 49 54 0A`) followed by version byte `0xFF`, the sign extension produces `-1`, which collides with the decoder's "need more data" sentinel value. This collision traps the decoder in a version-detection loop where it perpetually requests more data without consuming any bytes, never instantiates the `HeaderExtractor` that enforces header size limits, and causes `ByteToMessageDecoder` to accumulate all subsequent inbound bytes into an unbounded `cumulation` buffer until the JVM exhausts its direct memory allocation.

openSUSE-SU-2026:11394-1 — netty-4.1.136-1.1 on GA media

netty-4.1.136-1.1 on GA media

RHSA-2026:47172 — Red Hat Security Advisory: Red Hat build of Quarkus 3.33.2.SP3 security update

vertx-core: Eclipse Vert.x: Information disclosure via improper handling of HTTP 30x redirects io.vertx/vertx-web: Eclipse Vert.x Web Client: Information disclosure via improper cookie domain validation io.quarkus/quarkus-rest: io.quarkus/quarkus-vertx-http: io.quarkus.resteasy.reactive/resteasy-reactive: Quarkus REST - Unbounded multipart MIME part-header accumulation allows remote OOM denial of service org.apache.httpcomponents.core5/httpcore5: Apache HttpComponents Core: Denial of Service via excessive HTTP headers org.apache.httpcomponents.core5/httpcore5-h2: Apache HttpComponents Core: Denial of Service via oversized HTTP/2 HPACK header blocks io.netty/netty-codec-http: Netty: Denial of Service via SPDY SETTINGS frame processing netty: io.netty/netty-codec-http: Netty: Denial of Service via SPDY header decompression amplification io.netty/netty-codec-haproxy: Netty codec-haproxy: Denial of Service via crafted PROXY protocol v2 message netty: io.netty/netty-codec-http: Netty: Denial of Service via memory exhaustion in SPDY-to-HTTP codec io.netty/netty-codec-http: Netty: Security control bypass allows unauthorized requests via null origin header io.netty/netty-codec-http2: Netty: Denial of Service via HTTP/2 DATA frame memory leak io.netty/netty-codec-http: Netty: Protocol version confusion in netty-codec-http (WebSocket) io.netty/netty-codec-http: Netty: Memory exhaustion in netty-codec-http (decompression bomb) io.netty/netty-codec-http2: Netty: Improper header neutrali…

UBUNTU-CVE-2026-55851

Affected: Ubuntu:Pro:14.04:LTS: netty, Ubuntu:Pro:16.04:LTS: netty, Ubuntu:Pro:18.04:LTS: netty, Ubuntu:Pro:20.04:LTS: netty, Ubuntu:Pro:22.04:LTS: netty, Ubuntu:Pro:24.04:LTS: netty, Ubuntu:Pro:26.04:LTS: netty

WID-SEC-W-2026-2356 — Netty: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Netty ausnutzen, um Sicherheitsprüfungen zu umgehen, Anfragen oder Header zu manipulieren, Zertifikatsprüfungen zu unterlaufen sowie einen Denial of Service zu verursachen.