Netty has a Vulnerable Default Configuration Which Leads to Denial of Service via Unbounded HTTP/3 Header Size

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 HTTP3SETTINGSMAXFIELDSECTIONSIZE, the implementation defaults to an unbounded limit. This insecure default configuration...

ai.new-wave:spring-agent-app (>=0.1.0 <=0.3.0), ai.new-wave:spring-agent-core (>=0.1.0 <=0.3.0) +1038 more potentially affected by CVE-2026-44892 via io.netty:netty-codec-http3 (>=4.2.10.Final <=4.2.14.Final)

io.netty:netty-codec-http3 MAVEN version =4.2.10.Final, =0.1.0, =0.1.0, =0.0.1-alfa, =0.0.1-demo, =6.0.1, =4.0.3-M1, =1.21.9, =1.0.5, =3.6.4, =1.0.1, =26.2.1, =26.6.1 and more Source cves: CVE-2026-44892 Source advisory: OSV:GHSA-C2RX-5R8W-8XR2...

GHSA-C2RX-5R8W-8XR2 Netty has a Vulnerable Default Configuration Which Leads to Denial of Service via Unbounded HTTP/3 Header Size

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 HTTP3SETTINGSMAXFIELDSECTIONSIZE, the implementation defaults to an unbounded limit. This insecure default configuration...

Insecure Default Initialization of Resource

Overview Affected versions of this package are vulnerable to Insecure Default Initialization of Resource due to the lack of an enforced maximum header size limit in the default configuration of the Http3ConnectionHandler. An attacker can exhaust server memory and cause application crashes by...

ai.spice:spiceai (=0.6.0), cn.isqing.icloud:icloud-common-utils (>=4.0.3-M1 <=4.0.3.1) +431 more potentially affected by CVE-2026-44890 via io.netty:netty-codec-redis (>=4.2.0.Final <=4.2.14.Final)

io.netty:netty-codec-redis MAVEN version =4.2.0.Final, =4.0.3-M1, =1.21.9, =3.4.7, =25.4.1, =26.2.1, =7.9.0, =5.1.0, =5.1.0, =6.80, =0.2.2, =0.2.4 and more Source cves: CVE-2026-44890 Source advisory: OSV:GHSA-6GHJ-FRRJ-JJJ3...

ai.chronon:service_2.11 (>=0.0.86 <=def544ccef5f753238ecc4adfc2eaa7d2fc36d53-0.0.91), ai.chronon:service_2.12 (>=0.0.86 <=def544ccef5f753238ecc4adfc2eaa7d2fc36d53-0.0.91) +2478 more potentially affected by CVE-2026-44890 via io.netty:netty-codec-redis (>=4.1.0.Final <=4.1.134.Final)

io.netty:netty-codec-redis MAVEN version =4.1.0.Final, =0.0.86, =0.0.86, =0.0.86, =3.30.1.1, =3.10.0.5, =0.2.3.5, =0.0.1, =2.0.24, =1.1.9, =0.0.1, =0.0.9 and more Source cves: CVE-2026-44890 Source advisory: OSV:GHSA-6GHJ-FRRJ-JJJ3...

GHSA-6GHJ-FRRJ-JJJ3 Netty has Unbounded Direct Memory Consumption in its RedisDecoder

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

Netty has Unbounded Direct Memory Consumption in its RedisDecoder

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

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the decodeLength function. An attacker can exhaust the server's direct memory pool by sending continuous streams of digits without a terminating \r\n across multiple concurren...

ai.chronon:service_2.11 (>=0.0.86 <=def544ccef5f753238ecc4adfc2eaa7d2fc36d53-0.0.91), ai.chronon:service_2.12 (>=0.0.86 <=def544ccef5f753238ecc4adfc2eaa7d2fc36d53-0.0.91) +2478 more potentially affected by CVE-2026-44250 via io.netty:netty-codec-redis (>=4.1.0.Final <=4.1.134.Final)

io.netty:netty-codec-redis MAVEN version =4.1.0.Final, =0.0.86, =0.0.86, =0.0.86, =3.30.1.1, =3.10.0.5, =0.2.3.5, =0.0.1, =2.0.24, =1.1.9, =0.0.1, =0.0.9 and more Source cves: CVE-2026-44250 Source advisory: OSV:GHSA-3244-J874-RHC2...

ai.spice:spiceai (=0.6.0), cn.isqing.icloud:icloud-common-utils (>=4.0.3-M1 <=4.0.3.1) +431 more potentially affected by CVE-2026-44250 via io.netty:netty-codec-redis (>=4.2.0.Final <=4.2.14.Final)

io.netty:netty-codec-redis MAVEN version =4.2.0.Final, =4.0.3-M1, =1.21.9, =3.4.7, =25.4.1, =26.2.1, =7.9.0, =5.1.0, =5.1.0, =6.80, =0.2.2, =0.2.4 and more Source cves: CVE-2026-44250 Source advisory: OSV:GHSA-3244-J874-RHC2...

Netty: Memory Exhaustion in RedisArrayAggregator due to Deeply Nested Arrays

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...

GHSA-3244-J874-RHC2 Netty: Memory Exhaustion in RedisArrayAggregator due to Deeply Nested Arrays

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...

Denial of Service (DoS)

Overview Affected versions of this package are vulnerable to Denial of Service DoS in the RedisArrayAggregator function. An attacker can exhaust system memory by sending specially crafted Redis payloads containing deeply nested arrays, resulting in allocation of excessive state objects and...

ai.new-wave:spring-agent-app (>=0.1.0 <=0.3.0), ai.new-wave:spring-agent-core (>=0.1.0 <=0.3.0) +4461 more potentially affected by CVE-2026-44249 via io.netty:netty-handler (>=4.2.0.Final <=4.2.14.Final)

io.netty:netty-handler MAVEN version =4.2.0.Final, =0.1.0, =0.1.0, =4.7.4, =4.7.4, =4.7.3, =4.7.3, =4.7.3, =4.7.3, =4.7.3, =26.3.0, =26.3.0, =26.3.0, =26.3.2 and more Source cves: CVE-2026-44249 Source advisory: OSV:GHSA-3QP7-7MW8-WX86...

ai.agentican:agentican-framework-core (>=0.1.0-alpha.2 <=0.1.0-alpha.4), ai.agentican:agentican-quarkus-deployment (>=0.1.0-alpha.1 <=0.1.0-alpha.4) +29726 more potentially affected by CVE-2026-44249 via io.netty:netty-handler (>=4.0.0.Alpha1 <=4.1.134.Final)

io.netty:netty-handler MAVEN version =4.0.0.Alpha1, =0.1.0-alpha.2, =0.1.0-alpha.1, =0.1.0-alpha.1, =0.1.0-alpha.1, =0.1.0-alpha.1, =0.1.0-alpha.1, =0.1.0-alpha.1, =0.1.0-alpha.1, =0.1.0-alpha.1, =0.1.0-alpha.3, =0.1.0-alpha.2, =0.1.0, =0.1.0, =0.2.0, =0.2.0, =0.28.0 and more Source cves:...

Netty has an IPv6 Subnet Filter Bypass via Incorrect Comparator Masking

Summary An attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo. Valid public IP addresses can bypass the restrictions. Details io.netty.handler.ipfilter.IpSubnetFilterRulecompareTojava.net.InetSocketAddress method performs a bitwise AND...

Incorrect Comparison

Overview io.netty:netty-handler is a library that provides an asynchronous event-driven network application framework and tools for rapid development of maintainable high performance and high scalability protocol servers and clients. In other words, Netty is a NIO client server framework which...

Security Bulletin: IBM Datapower Operations Dashboard is vulnerable to HTTP Request Smuggling CVE-2025-58056

Summary Netty is used by the IBM Datapower Operations Dashboard as part of their server implementation Vulnerability Details CVEID:CVE-2025-58056 DESCRIPTION: Netty is an asynchronous event-driven network application framework for development of maintainable high performance protocol servers and...

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,...