CVE Intelligence

Io.netty Netty-codec vulnerabilities

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Published CVEs affecting Io.netty Netty-codec: 1 record(s), with affected versions and fixes.

CVE-2026-42583 High · 7.5 CWE-400 May 13, 2026
Netty: Lz4FrameDecoder resource exhaustion
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Lz4FrameDecoder allocates a ByteBuf of size decompressedLength (up to 32 MB per block) before LZ4 runs. A peer only needs a 21-byte header plus compressedLength payload bytes - 22 bytes if compressedLength == 1 - to force that allocation. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.