Io.netty vulnerabilities
We track 7 vulnerabilities in Io.netty products across 7 products. 7 are rated high or critical, and none are known to be exploited. The most recent was published on May 13, 2026.
Latest Io.netty vulnerabilities
- 7.5 High severity
netty: Uncontrolled Resource Consumption
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the MQTT 5 header Properties section is parsed and buffered before any message size limit is applied. Specifically, in MqttDecoder, the decodeVariabl
- 7.5 High severity
netty: Uncontrolled Resource Consumption
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpContentDecompressor accepts a maxAllocation parameter to limit decompression buffer size and prevent decompression bomb attacks. This limit is co
- 7.1 High severity
netty: Improper Neutralization of CRLF Sequences
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the Netty Redis codec encoder (RedisEncoder) writes user-controlled string content directly to the network output buffer without validating or saniti
- 7.5 High severity
netty: Inconsistent Interpretation of HTTP Requests
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Fin
- 9.1 Critical severity
netty: Inconsistent Interpretation of HTTP Requests
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpClientCodec pairs each inbound response with an outbound request by queue.poll() once per response, including for 1xx. If the client pipelines GE
- 7.5 High severity
netty: Uncontrolled Resource Consumption
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 compr
- 7.5 High severity
netty: Allocation of Resources Without Limits or Throttling
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final, when decoding header blocks, the non-Huffman branch of io.netty.handler.codec.http3.QpackDecoder#decodeHuffmanEncodedLiteral may execute new byte[length] for a string