netty vulnerabilities
CVEs whose affected-version data names the netty package (maven). Each record lists the affected and patched versions; check a specific version with the dependency checker or POST /api/sbom.
53 CVEsRSS
CVE-2026-44893High· 7.5Netty is a network application framework for development of protocol servers and clients
Netty is a network application framework for development of protocol servers and clients. In netty-codec-haproxy prior to versions 4.1.135.Final and 4.2.15.Final, when decoding a PP2_TYPE_SSL TLV, HAProxyMessage.readNextTLV() first calls…
CVE-2026-44250High· 7.5Netty is a network application framework for development of protocol servers and clients
Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending a crafted Redis payload with deeply nes…
CVE-2026-44890High· 7.5Netty is a network application framework for development of protocol servers and clients
Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending crafted Redis payloads across multiple …
CVE-2026-44249High· 8.1Netty is a network application framework for development of protocol servers and clients
Netty is a network application framework for development of protocol servers and clients. In netty-handler prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can bypass IPv6 subnet rules due to an incorrect masking operation i…
CVE-2026-44248Medium· 5.3⚖ disputedNetty is an asynchronous, event-driven network application framework
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 MqttDec…
CVE-2026-42582High· 7.5Netty is an asynchronous, event-driven network application framework
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 byt…
CVE-2026-42584High· 7.3PoCNetty is an asynchronous, event-driven network application framework
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 …
CVE-2026-42581Medium· 5.8PoCNetty is an asynchronous, event-driven network application framework
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpObjectDecoder strips a conflicting Content-Length header when a request carries both Transfer-Encoding: chunked and Conten…
CVE-2026-42579High· 7.5PoCNetty is an asynchronous, event-driven network application framework
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's DNS codec does not enforce RFC 1035 domain name constraints during either encoding or decoding. This creates a bidirec…
CVE-2026-42578High· 7.5PoC⚖ disputedNetty is an asynchronous, event-driven network application framework
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's HttpProxyHandler constructs HTTP CONNECT requests with header validation explicitly disabled. The newInitialMessage() …
CVE-2026-42587High· 7.5PoCNetty is an asynchronous, event-driven network application framework
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 at…
CVE-2026-33871High· 7.5Netty is an asynchronous, event-driven network application framework
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service (DoS) against a Netty HTTP/2 server by sending a flood of `CONTINUAT…
CVE-2026-33870High· 7.5PoCNetty is an asynchronous, event-driven network application framework
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request s…
CVE-2025-67735Medium· 6.5Netty is an asynchronous, event-driven network application framework
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the `io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection with the request URI when constructing a …
CVE-2021-43797Medium· 6.5Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the b…
CVE-2021-37137High· 7.5The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage
The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage. Beside this it also may buffer reserved skippable chunks until the whole chunk was received which may lead to excessive memory …
CVE-2021-37136High· 7.5The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression)
The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression). All users of Bzip2Decoder are affected. The malicious input c…
CVE-2021-21409Medium· 5.9Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there i…
CVE-2021-21295Medium· 5.9Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there i…
CVE-2021-21290Medium· 6.2Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-lik…
CVE-2019-20445Critical· 9.1HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.
HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.
CVE-2019-20444Critical· 9.1HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."
HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."
CVE-2019-16869High· 7.5Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.