CVE-2026-42587

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 correctly enforced for gzip and deflate...

CVE-2026-42587 Netty: HttpContentDecompressor maxAllocation bypass via Content-Encoding: br/zstd/snappy enables decompression bomb DoS

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 correctly enforced for gzip and deflate...

CVE-2026-42586 Netty: CRLF Injection in Netty Redis Codec Encoder

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 sanitizing CRLF \r\n characters. Since the...

CVE-2026-42586 Netty: CRLF Injection in Netty Redis Codec Encoder

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 sanitizing CRLF \r\n characters. Since the...

CVE-2026-42586 Netty: CRLF Injection in Netty Redis Codec Encoder

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 sanitizing CRLF \r\n characters. Since the...

CVE-2026-42586

CVE-2026-42586 affects Netty up to 4.2.13.Final and 4.1.133.Final where the RedisEncoder writes user-controlled strings to the output buffer without sanitizing CRLF (\n). Because RESP uses CRLF as command/response delimiters, an attacker who controls Redis message content can inject arbitrary Red...

CVE-2026-42586

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 sanitizing CRLF \r\n characters. Since the...

CVE-2026-42585 Netty: HTTP Request Smuggling due to malformed Transfer-Encoding

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.Final...

CVE-2026-42585 Netty: HTTP Request Smuggling due to malformed Transfer-Encoding

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.Final...

CVE-2026-42585

Netty CVE-2026-42585 affects Netty prior to versions 4.2.13.Final and 4.1.133.Final, where improper parsing of malformed Transfer-Encoding can enable HTTP request smuggling. Public advisories and OSV entries confirm the issue and that fixes are available in 4.2.13.Final and 4.1.133.Final. Affecte...

CVE-2026-42585

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.Final...

CVE-2026-42585 Netty: HTTP Request Smuggling due to malformed Transfer-Encoding

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.Final...

CVE-2026-42584 Netty: HttpClientCodec response desynchronization

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 GET then HEAD and the server sends 103,...

CVE-2026-42584 Netty: HttpClientCodec response desynchronization

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 GET then HEAD and the server sends 103,...

CVE-2026-42584

Netty vulnerability CVE-2026-42584 affects Netty’s HttpClientCodec desynchronization between inbound responses and outbound requests when handling 1xx responses, occurring prior to Netty 4.2.13.Final and 4.1.133.Final. In the described sequence (GET then HEAD; server sends 103, then GET body, the...

CVE-2026-42584

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 GET then HEAD and the server sends 103,...

CVE-2026-42584 Netty: HttpClientCodec response desynchronization

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 GET then HEAD and the server sends 103,...

CVE-2026-42583 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...

CVE-2026-42583 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...

CVE-2026-42583

CVE-2026-42583 (Netty) affects Netty’s Lz4FrameDecoder. Before versions 4.2.13.Final and 4.1.133.Final, Lz4FrameDecoder allocates a ByteBuf sized to decompressedLength (up to 32 MB per block) prior to running the LZ4 step. A peer can trigger this allocation with only a 21-byte header plus compres...