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CVE-2026-42583

Medium priority
Not affected

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...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Not affected Not affected Not affected Not affected Not affected
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CVE-2026-42582

Medium priority
Not affected

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...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Not affected Not affected Not affected Not affected Not affected
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CVE-2026-42581

Medium priority

Some fixes available 6 of 7

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...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Fixed Fixed Fixed Fixed Fixed
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CVE-2026-42580

Medium priority
Needs evaluation

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's chunk size parser silently overflows int, enabling request smuggling attacks. This vulnerability is fixed in...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-42579

Medium priority

Some fixes available 4 of 5

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...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Fixed Fixed Fixed Fixed Not affected
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CVE-2026-42578

Medium priority

Some fixes available 5 of 6

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....

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Fixed Fixed Fixed Fixed Fixed
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CVE-2026-42577

Medium priority
Not affected

Netty is an asynchronous, event-driven network application framework. From 4.2.0.Final to 4.2.13.Final , Netty's epoll transport fails to detect and close TCP connections that receive a RST after being half-closed, leading to...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Not affected Not affected Not affected Not affected Not affected
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CVE-2026-41417

Medium priority
Needs evaluation

Netty allows request-line validation to be bypassed when a `DefaultHttpRequest` or `DefaultFullHttpRequest` is created first and its URI is later changed via `setUri()`. The constructors reject CRLF and whitespace characters that...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33871

Medium priority
Needs evaluation

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...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-33870

Medium priority
Needs evaluation

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...

1 affected package

netty

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
netty Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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