USN-8401-1 netty vulnerabilities

It was discovered that Netty's HTTP proxy handler did not properly validate headers when constructing CONNECT requests. An attacker could possibly use this issue to inject arbitrary HTTP headers into CONNECT requests. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS,...

USN-8401-1: Netty vulnerabilities

It was discovered that Netty's HTTP proxy handler did not properly validate headers when constructing CONNECT requests. An attacker could possibly use this issue to inject arbitrary HTTP headers into CONNECT requests. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS,...

PT-2026-47603

Name of the Vulnerable Software and Affected Versions Netty affected versions not specified Description The default configuration of the Http3ConnectionHandler in the Netty HTTP/3 codec does not enforce a maximum header size limit. When a peer does not specify HTTP3 SETTINGS MAX FIELD SECTION SIZ...

PT-2026-47543

Summary An attacker can cause DoS by sending a crafted Redis payload with deeply nested arrays. This forces the server to allocate a massive number of state objects and collections, leading to memory exhaustion and an OutOfMemoryError. Details io.netty.handler.codec.redis.RedisArrayAggregator...

PT-2026-47551

Summary Netty's DnsResolveContext insufficiently validates the bailiwick of NS records, enabling DNS Cache Poisoning. An attacker controlling an authoritative name server for a subdomain can poison the cache for parent domains like .co.uk. Details In...

PT-2026-47563

Summary The default configuration of the Http3ConnectionHandler in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify HTTP3 SETTINGS MAX FIELD SECTION SIZE, the implementation defaults to an unbounded limit. This insecure default...

PT-2026-47554

Summary Netty's DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS responses. Details In io.netty.resolver.dns.DnsResolveContextbuildAliasMap, the resolver processes the ANSWER section of a DNS response and blindly caches all CNAME records it finds. According to...

Cleartext Transmission of Sensitive Information

Overview Affected versions of this package are vulnerable to Cleartext Transmission of Sensitive Information via HTTP redirect handling in the HTTP client. An attacker can obtain sensitive credentials by causing a client configured to automatically follow redirects to follow a redirect from a...

cve-2026-41715 - MEDIUM - Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect

cve-2026-41715 - MEDIUM - Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect...

PT-2026-48916

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.135.Final Netty versions prior to 4.2.15.Final Description Netty HTTP/2 max header size handling allows for an attack similar to HTTP/2 Rapid Reset. When a client sends the SETTINGS MAX HEADER LIST SIZE setting, the...

PT-2026-47589

Summary Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entropy of DNS queries, enabling DNS Cache Poisoning Kaminsky attack. Details Two factors contribute to this vulnerability in...

PT-2026-47610

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.135.Final Netty versions prior to 4.2.15.Final Description Netty's DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS responses. In the buildAliasMap function within...

PT-2026-47555

Summary An attacker can cause DoS by sending crafted Redis payloads across multiple connections without r . This exhausts the server's direct memory pool OutOfDirectMemoryError, preventing legitimate connections from being processed. Details io.netty.handler.codec.redis.RedisDecoder decodes the...

CVE-2026-45291

Cloudburst Network provides network components used within Cloudburst projects. A vulnerability in versions prior to 1.0.0.CR3-20260418.124334-32 impacts publicly accessible software depending on the affected versions of Network and allows an attacker to exploit a bug in Network to close the pare...

CVE-2026-45290

Cloudburst Network provides network components used within Cloudburst projects. A vulnerability in versions prior to 1.0.0.CR3-20260417.085727-30 impacts publicly accessible software depending on the affected versions of Network and allows an attacker to exploit a vulnerability in Network to stal...

CVE-2026-49361

Apache Fluss versions prior to 0.9.1 configure the Netty LengthFieldBasedFrameDecoder with Integer.MAXVALUE as the maximum frame length, allowing unauthenticated remote attackers to exhaust JVM heap memory on TabletServer and CoordinatorServer by sending specially crafted frame headers, resulting...

CVE-2026-48040

The netty incubator codec.bhttp is a java language binary http parser. The library implements Oblivious HTTP RFC 9458 using BoringSSL's HPKE C library via JNI. When deriving native memory addresses for cryptographic operations versions prior to 0.0.22.Final provide a fallback path for direct...

CVE-2026-48480

The netty incubator codec.bhttp is a java language binary http parser. Prior to version 0.0.22.FInal, the codec-ohttp implementation of draft-ietf-ohai-chunked-ohttp does not verify that a cryptographically-signed final chunk was received before the outer HTTP body terminates. An on-path adversar...

CVE-2026-42582

A flaw was found in Netty, an asynchronous, event-driven network application framework. A remote attacker could exploit this vulnerability by sending a specially crafted compressed field section during header block decoding. This flaw occurs because the system allocates a new byte array based on ...

CVE-2026-42577

Netty is an asynchronous, event-driven network application framework. From 4.2.0.Final to 4.2.13.Final , Netty's epoll transport fails to detect and close TCP connections that receive a RST after being half-closed, leading to stale channels that are never cleaned up and, in some code paths, a 100...