CVE-2026-48006 is a high-severity security vulnerability in io.netty:netty-codec-redis (maven), affecting versions >= 4.2.0.Final, <= 4.2.14.Final. It is fixed in 4.2.15.Final, 4.1.135.Final.
Impact The RedisArrayAggregator handler permanently leaks pooled direct-memory buffers when a Redis pipeline connection closes before a RESP array aggregate completes. The handler retains child messages in per-handler state (depths field) but defines no channelInactive, handlerRemoved, or exceptionCaught method to release them when the pipeline tears down. Because the leaked buffers are slices of PooledByteBufAllocator chunks, they prevent those chunks from being returned to the JVM-wide direct-memory pool. Repeated connection churn by any network peer monotonically drains this shared pool, eventually causing allocation failures on all Netty channels in the process.
maven
io.netty:netty-codec-redis (>= 4.2.0.Final, <= 4.2.14.Final)io.netty:netty-codec-redis (<= 4.1.134.Final)io.netty:netty-codec-redis → 4.2.15.Final (maven)io.netty:netty-codec-redis → 4.1.135.Final (maven)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter instead of chasing every advisory.
Kodem's runtime-powered SCA identifies whether CVE-2026-48006 is reachable in your applications. Explore open-source security for your team.
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Upgrade the following packages to resolve this vulnerability:
io.netty:netty-codec-redis to 4.2.15.Final or laterio.netty:netty-codec-redis to 4.1.135.Final or laterKodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
CVE-2026-48006 is a high-severity security vulnerability in io.netty:netty-codec-redis (maven), affecting versions >= 4.2.0.Final, <= 4.2.14.Final. It is fixed in 4.2.15.Final, 4.1.135.Final.
io.netty:netty-codec-redis (maven) versions >= 4.2.0.Final, <= 4.2.14.Final is affected.
Yes. CVE-2026-48006 is fixed in 4.2.15.Final, 4.1.135.Final. Upgrade to this version or later.
Whether CVE-2026-48006 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
io.netty:netty-codec-redis to 4.2.15.Final or laterio.netty:netty-codec-redis to 4.1.135.Final or later