CVE-2026-42582

Netty (HTTP/3) vulnerable in QpackDecoder.decodeHuffmanEncodedLiteral prior to 4.2.13.Final: the non-Huffman path may allocate byte[length] without verifying length

CVE-2026-42582 Netty: HTTP/3 QPACK literal unbounded allocation

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.QpackDecoderdecodeHuffmanEncodedLiteral may execute new bytelength for a string literal before verifying that length byt...

CVE-2026-42582

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.QpackDecoderdecodeHuffmanEncodedLiteral may execute new bytelength for a string literal before verifying that length byt...

CVE-2026-42582 Netty: HTTP/3 QPACK literal unbounded allocation

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.QpackDecoderdecodeHuffmanEncodedLiteral may execute new bytelength for a string literal before verifying that length byt...

CVE-2026-42580 Netty: HTTP Request Smuggling due to incorrect chunk size parsing

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 4.2.13.Final and 4.1.133.Final...

CVE-2026-42580

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 4.2.13.Final and 4.1.133.Final...

CVE-2026-42580 Netty: HTTP Request Smuggling due to incorrect chunk size parsing

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 4.2.13.Final and 4.1.133.Final...

CVE-2026-42580

Netty vulnerability CVE-2026-42580: The chunk size parser in Netty before 4.2.13.Final and 4.1.133.Final silently overflows an int, enabling HTTP request smuggling. Affected: Netty versions prior to the fixed releases. Impact: potential request smuggling with LOW to MEDIUM described CVSS factors ...

CVE-2026-42580

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 4.2.13.Final and 4.1.133.Final...

CVE-2026-42580 Netty: HTTP Request Smuggling due to incorrect chunk size parsing

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 4.2.13.Final and 4.1.133.Final...

CVE-2026-42579 Netty: DNS Codec Input Validation Bypass in Netty (Encoder + Decoder)

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 bidirectional attack surface: malicious DNS responses can exploit t...

CVE-2026-42579

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 bidirectional attack surface: malicious DNS responses can exploit t...

CVE-2026-42579 Netty: DNS Codec Input Validation Bypass in Netty (Encoder + Decoder)

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 bidirectional attack surface: malicious DNS responses can exploit t...

CVE-2026-42579 Netty: DNS Codec Input Validation Bypass in Netty (Encoder + Decoder)

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 bidirectional attack surface: malicious DNS responses can exploit t...

CVE-2026-42579

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 bidirectional attack surface: malicious DNS responses can exploit t...

ai.catboost:catboost-spark_4.1_2.13 (1.2.10), ai.covia:covia-sql (0.6.0) +3363 more potentially affected by CVE-2026-42579 via io.netty:netty-codec-dns (>=4.2.0.alpha1, <=4.2.12.final)

io.netty:netty-codec-dns MAVEN version =4.2.0.alpha1, =0.4.0, =0.4.0, =1.0.0-beta, =0.6.4, =0.6.4, =0.6.4, =0.1.0, =0.1.0, =4.13.5, =4.9.0, =4.9.0, =4.9.2 and more Source cves: CVE-2026-42579 Source advisory: MEND:CVE-2026-42579...

CVE-2026-42579

Summary: CVE-2026-42579 affects the Netty framework’s DNS codec. Affected versions: prior to 4.2.13.Final and 4.1.133.Final. Root cause: DNS encoding/decoding did not enforce RFC 1035 domain name constraints. Impact: potential bidirectional attack surface via malicious DNS responses (decoder) or ...

CVE-2026-42577 Netty: epoll transport denial of service via RST on half-closed TCP connection

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 stale channels that are never cleaned up and, in some code paths, a 100...

CVE-2026-42577

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 stale channels that are never cleaned up and, in some code paths, a 100...

CVE-2026-42577 Netty: epoll transport denial of service via RST on half-closed TCP connection

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 stale channels that are never cleaned up and, in some code paths, a 100...