NE
Product
netty
by netty · last CVE Sep 26, 2026
On CISA KEVExploited in the wild
104
CVEs
1
On KEV
10.0
Max CVSS
0
New 30D
Severity mix
Critical 10High 63Medium 28Low 1
Watch

Add netty to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-42585
7.5
0%
May 13
Netty: HTTP Request Smuggling due to malformed Transfer-Encoding
Affected: >= 4.2.0.Alpha1, < 4.2.13.Final; < 4.1.133.Final
CVE-2026-42583
7.5
0%
May 13
Netty: Lz4FrameDecoder resource exhaustion
Affected: >= 4.2.0.Alpha1, < 4.2.13.Final; < 4.1.133.Final
CVE-2026-42582
7.5
0%
May 13
Netty: HTTP/3 QPACK literal unbounded allocation
Affected: >= 4.2.0.Alpha1, < 4.2.13.Final
CVE-2026-42577
7.5
0%
May 13
Netty: epoll transport denial of service via RST on half-closed TCP connection
Affected: >= 4.2.0.Final, < 4.2.13.Final
CVE-2026-42578
7.5
1%
May 13
Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation
Affected: >= 4.2.0.Alpha1, < 4.2.13.Final; < 4.1.133.Final
CVE-2026-33871
7.5
1%
Mar 27
Netty HTTP/2 CONTINUATION Frame Flood DoS via Zero-Byte Frame Bypass
Affected: < 4.1.132.Final; >= 4.2.0.Alpha1, < 4.2.10.Final
CVE-2026-33870
7.5
1%
Mar 27
Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing
Affected: < 4.1.132.Final; >= 4.2.0.Alpha1, < 4.2.10.Final
CVE-2025-58057
7.5
1%
Sep 4
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
Affected: before 4.1.125; 4.2.0 before 4.2.5
CVE-2025-58056
7.5
1%
Sep 3
Netty is an asynchronous event-driven network application framework for development of maintainable high performance protocol servers and clients
Affected: before 4.1.125; 4.2.0 before 4.2.5
CVE-2025-55163
7.5
1%
Aug 13
Netty is an asynchronous, event-driven network application framework
Affected: before 4.1.124; 4.2.0 before 4.2.4
CVE-2025-24970
7.5
2%
Feb 10
Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final
Affected: 4.1.91 before 4.1.118
CVE-2022-41881
7.5
2%
Dec 12
Netty project is an event-driven asynchronous network application framework
Affected: before 4.1.86
CVE-2021-37137
7.5
7%
Oct 19
The Snappy frame decoder function doesn't restrict the chunk length which may lead to excessive memory usage
Affected: before 4.1.68
CVE-2021-37136
7.5
6%
Oct 19
The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression)
Affected: before 4.1.68
CVE-2020-11612
7.5
9%
Apr 7
The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream
Affected: 4.1 before 4.1.46
CVE-2020-7238
7.5
4%
Jan 27
Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length…
Affected: 4.1.43
CVE-2019-16869
7.5
9%
Sep 26
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
Affected: before 4.1.42
CVE-2015-2156
7.5
5%
Oct 18
Netty before 3.9.8.Final, 3.10.x before 3.10.3.Final, 4.0.x before 4.0.28.Final, and 4.1.x before 4.1.0.Beta5 and Play Framework 2.x before 2.3.9 might allow remote attackers to…
Affected: through 3.9.7; 3.10.0; 3.10.1; 3.10.2; 4.0.0; 4.0.1; +30 more
CVE-2016-4970
7.5
11%
Apr 13
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop)
Affected: 4.0.20 before 4.0.37; 4.1.0 before 4.1.1
CVE-2026-56822
7.4
0%
Jul 28
Netty: TOCTOU in OcspServerCertificateValidator
Affected: >= 4.2.0.Final, < 4.2.16.Final; < 4.1.136.Final
CVE-2026-56821
7.4
0%
Jul 28
Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator
Affected: < 4.1.136.Final; >= 4.2.0.Final, < 4.2.16.Final
CVE-2026-100666
7.3
0%
Sep 26
Netty 4.2.0 through 4.2.16 Response Desynchronization via HttpServerCodec
Affected: 4.2.0.Final before 4.2.17.Final; before 4.1.137.Final
CVE-2026-42586
7.1
0%
May 13
Netty: CRLF Injection in Netty Redis Codec Encoder
Affected: >= 4.2.0.Alpha1, < 4.2.13.Final; < 4.1.133.Final
CVE-2026-45673
6.8
0%
Jun 12
Netty: DNS Cache Poisoning due to Predictable PRNG and Default Static Source Port
Affected: >= 4.2.0.Final, < 4.2.15.Final; < 4.1.135.Final
CVE-2026-100659
6.5
0%
Sep 26
Netty 4.2.0 through 4.2.17 HTTP/3 Request Routing Bypass
Affected: 4.2.0.Final before 4.2.18.Final
CVE-2026-89044
6.5
0%
Sep 10
Netty 4.1.133.Final through 4.1.137.Final and 4.2.13.Final through 4.2.17.Final HTTP Request Smuggling via Transfer-Encoding
Affected: 4.1.133.Final before 4.1.138.Final; 4.2.13.Final before 4.2.18.Final
CVE-2026-56818
6.5
0%
Aug 7
Netty: RedisArrayAggregator max-elements failure leaves retained partial aggregate state
Affected: < 4.1.136.Final; >= 4.2.0-Final, < 4.2.16.Final
CVE-2026-59920
6.5
0%
Jul 29
Netty: STOMP CONNECT Frame Header Injection
Affected: < 4.1.136.Final; >= 4.2.0.Final, < 4.2.16.Final
CVE-2026-59921
6.5
0%
Jul 28
Netty: CRLF Injection via Multipart Filename in Netty HttpPostRequestEncoder
Affected: >= 4.2.0.Final, < 4.2.16.Final; < 4.1.136.Final
CVE-2026-56746
6.5
0%
Jul 21
Netty has a Security Control Bypass via CORS Short-Circuit Failure
Affected: >= 4.2.0.Final, < 4.2.16.Final; >= 4.1.0.Final, < 4.1.136.Final
CVE-2026-42580
6.5
0%
May 13
Netty: HTTP Request Smuggling due to incorrect chunk size parsing
Affected: >= 4.2.0.Alpha1, < 4.2.13.Final; < 4.1.133.Final
CVE-2025-67735
6.5
0%
Dec 16
Netty has a CRLF Injection vulnerability in io.netty.handler.codec.http.HttpRequestEncoder
Affected: >= 4.2.0.Alpha1, < 4.2.8.Final; < 4.1.129.Final
CVE-2023-34462
6.5
2%
Jun 22
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
Affected: before 4.1.94
CVE-2022-41915
6.5
1%
Dec 13
Netty project is an event-driven asynchronous network application framework
Affected: 4.1.83 before 4.1.86
CVE-2021-43797
6.5
3%
Dec 9
HTTP fails to validate against control chars in header names which may lead to HTTP request smuggling
Affected: <= 4.1.7.0.Final
CVE-2021-21409
5.9
5%
Mar 30
Possible request smuggling in HTTP/2 due missing validation of content-length
Affected: < 4.1.61.Final
CVE-2021-21295
5.9
19%
Mar 9
Possible request smuggling in HTTP/2 due missing validation
Affected: before 4.1.60
CVE-2026-59919
5.5
0%
Jul 29
Netty: HAProxy V1 Protocol CRLF Injection via AF_UNIX Address
Affected: < 4.1.136.Final; >= 4.2.0.Final, < 4.2.16.Final
CVE-2025-59419
5.5
2%
Oct 15
Netty netty-codec-smtp SMTP Command Injection Vulnerability Allowing Email Forgery
Affected: < 4.2.7.Final; >= 4.2.0.Alpha1, < 4.1.128.Final
CVE-2025-25193
5.5
0%
Feb 10
Netty, an asynchronous, event-driven network application framework, has a vulnerability in versions up to and including 4.1.118.Final
Affected: before 4.1.118
CVE-2024-47535
5.5
0%
Nov 12
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
Affected: before 4.1.115
CVE-2022-24823
5.5
1%
May 6
Netty is an open-source, asynchronous event-driven network application framework
Affected: before 4.1.77
CVE-2021-21290
5.5
2%
Feb 8
Local Information Disclosure Vulnerability in Netty on Unix-Like systems due temporary files
Affected: < 4.1.59.Final
CVE-2026-59900
5.3
0%
Jul 29
Netty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing Bypass
Affected: >= 4.2.0.Final, < 4.2.16.Final; < 4.1.136.Final
CVE-2026-50560
5.3
0%
Jun 12
Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature
Affected: >= 4.2.0.Final, < 4.2.15.Final; < 4.1.135.Final
CVE-2026-50020
5.3
0%
Jun 12
Netty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permitted
Affected: >= 4.2.0.Final, < 4.2.15.Final; < 4.1.135.Final
CVE-2026-47244
5.3
0%
Jun 12
Netty HTTP/2: Advertised MAX_CONCURRENT_STREAMS are not enforced
Affected: >= 4.2.0.Final, < 4.2.15.Final; < 4.1.135.Final
CVE-2026-41417
5.3
0%
May 6
Netty vulnerable to HTTP request smuggling and RTSP request injection via DefaultHttpRequest.setUri()
Affected: >= 4.2.0.Alpha1, <= 4.2.12.Final; <= 4.1.132.Final
CVE-2024-29025
5.3
1%
Mar 25
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients
Affected: before 4.1.108
CVE-2026-50009
4.8
0%
Jun 12
Netty QUIC stateless reset token material exposed through header-visible connection IDs
Affected: >= 4.2.0.Final, < 4.2.15.Final
Page 2 of 3 · 104 total