# Netty Project vulnerabilities

Source: https://junglewise.ai/threats/vendors/netty-project  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/netty-project.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 62 vulnerabilities in Netty Project: 0 in the last 7 days and 13 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-100666, was published on 26 September 2026. Nothing in the last four weeks, down from 11 vulnerabilities in the four before. 9 technologies have a page of their own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 13
- All time: 62 (0 critical, 0 exploited in the wild)

## About Netty Project

Netty Project is an asynchronous event-driven network application framework for Java.

## Latest Netty Project vulnerabilities

- [CVE-2026-100666: Netty HttpServerCodec response desynchronization](https://junglewise.ai/threats/cve-2026-100666-netty-s-httpservercodec-io-netty-netty-codec-http-in-versions-4) (high, CVSS 7.3, published 26 Sep 2026)
- [CVE-2026-100665: Netty incomplete hostname verification in QUIC certificate verification](https://junglewise.ai/threats/cve-2026-100665-netty-versions-from-4-2-11-final-before-4-2-18-final-contain-an) (high, CVSS 7.5, published 26 Sep 2026)
- [CVE-2026-100664: Netty HTTP/3 codec Host header authority confusion](https://junglewise.ai/threats/cve-2026-100664-netty-s-http-3-codec-io-netty-netty-codec-http3-versions-4-2-2) (high, CVSS 7.5, published 26 Sep 2026)
- [CVE-2026-100659: Netty HTTP/3 codec host header validation bypass](https://junglewise.ai/threats/cve-2026-100659-netty-s-http-3-codec-io-netty-netty-codec-http3-in-versions-4-2) (medium, CVSS 6.5, published 26 Sep 2026)
- [CVE-2026-93574: Netty netty-codec-http request smuggling via chunk-size parsing](https://junglewise.ai/threats/cve-2026-93574-a-flaw-was-found-in-netty-s-netty-codec-http-component-a-remote) (medium, CVSS 6.5, published 18 Sep 2026)
- [CVE-2026-93579: Netty HTTP/2 header injection vulnerability](https://junglewise.ai/threats/cve-2026-93579-a-flaw-was-found-in-netty-s-http-2-stack-this-vulnerability) (medium, CVSS 6.5, published 18 Sep 2026)
- [CVE-2026-93576: Netty netty-codec-smtp CR/LF injection in SMTP command parsing](https://junglewise.ai/threats/cve-2026-93576-a-flaw-was-found-in-netty-netty-codec-smtp-the-component-does-not) (high, CVSS 7.5, published 18 Sep 2026)
- [CVE-2026-93572: Netty RedisArrayAggregator heap memory exhaustion](https://junglewise.ai/threats/cve-2026-93572-a-flaw-was-found-in-netty-s-redisarrayaggregator-component-a) (high, CVSS 7.5, published 18 Sep 2026)
- [CVE-2026-93563: Netty SmtpResponseDecoder unbounded memory accumulation](https://junglewise.ai/threats/cve-2026-93563-a-flaw-was-found-in-netty-s-smtpresponsedecoder-component-a) (high, CVSS 7.5, published 18 Sep 2026)
- [CVE-2026-93494: Netty memory leak in StompSubframeDecoder](https://junglewise.ai/threats/cve-2026-93494-a-flaw-was-found-in-netty-s-stompsubframedecoder-component-a) (high, CVSS 7.5, published 18 Sep 2026)
- [CVE-2026-54251: Netty netty-incubator-codec-ohttp memory leak in AEAD decryption](https://junglewise.ai/threats/cve-2026-54251-netty-netty-incubator-codec-ohttp-memory-leak-in-aead-decryption) (high, CVSS 4, published 15 Sep 2026)
- [CVE-2026-63202: Netty Incubator OHTTP BinaryHttpParser infinite loop DoS](https://junglewise.ai/threats/cve-2026-63202-netty-incubator-ohttp-binaryhttpparser-infinite-loop-dos) (high, CVSS 7.5, published 20 Aug 2026)
- [CVE-2026-59902: Netty SctpMessageCompletionHandler memory exhaustion](https://junglewise.ai/threats/cve-2026-59902-netty-sctpmessagecompletionhandler-memory-exhaustion) (high, CVSS 7.5, published 17 Aug 2026)
- [CVE-2026-59920: Netty STOMP header injection in CONNECT frames](https://junglewise.ai/threats/cve-2026-59920-netty-stomp-header-injection-in-connect-frames) (medium, CVSS 6.5, published 29 Jul 2026)
- [CVE-2026-59919: Netty CRLF injection in HAProxyMessageEncoder AF_UNIX addresses](https://junglewise.ai/threats/cve-2026-59919-netty-crlf-injection-in-haproxymessageencoder-af-unix-addresses) (medium, CVSS 5.5, published 29 Jul 2026)
- [CVE-2026-59900: Netty request smuggling via Host header duplication in HTTP/2 translation](https://junglewise.ai/threats/cve-2026-59900-netty-request-smuggling-via-host-header-duplication-in-http-2) (medium, CVSS 4, published 29 Jul 2026)
- [CVE-2026-59899: Netty resource exhaustion in HttpContentEncoder via HTTP pipelining](https://junglewise.ai/threats/cve-2026-59899-netty-resource-exhaustion-in-httpcontentencoder-via-http) (medium, CVSS 4, published 29 Jul 2026)
- [CVE-2026-56822: Netty TOCTOU race condition in OcspServerCertificateValidator](https://junglewise.ai/threats/cve-2026-56822-netty-toctou-race-condition-in-ocspservercertificatevalidator) (high, CVSS 7.4, published 29 Jul 2026)
- [CVE-2026-56821: Netty OcspServerCertificateValidator certificate revocation bypass](https://junglewise.ai/threats/cve-2026-56821-netty-ocspservercertificatevalidator-certificate-revocation) (high, CVSS 7.4, published 29 Jul 2026)
- [CVE-2026-59921: Netty CRLF injection in HttpPostRequestEncoder multipart filenames](https://junglewise.ai/threats/cve-2026-59921-netty-crlf-injection-in-httppostrequestencoder-multipart) (medium, CVSS 5.7, published 28 Jul 2026)
- [CVE-2026-56820: Netty OcspClient revocation check bypass via improper CertificateID validation](https://junglewise.ai/threats/cve-2026-56820-netty-ocspclient-revocation-check-bypass-via-improper) (high, CVSS 7.4, published 21 Jul 2026)
- [CVE-2026-56819: Netty memory leak in HTTP/2 content decompression](https://junglewise.ai/threats/cve-2026-56819-netty-memory-leak-in-http-2-content-decompression) (high, CVSS 7.5, published 21 Jul 2026)
- [CVE-2026-56817: Netty XmlDecoder XML external entity reference vulnerability](https://junglewise.ai/threats/cve-2026-56817-netty-xmldecoder-xml-external-entity-reference-vulnerability) (high, CVSS 4, published 21 Jul 2026)
- [CVE-2026-56746: Netty security bypass in CorsHandler origin evaluation](https://junglewise.ai/threats/cve-2026-56746-netty-security-bypass-in-corshandler-origin-evaluation) (medium, CVSS 6.5, published 21 Jul 2026)
- [CVE-2026-56745: Netty memory leak in SpdyHttpDecoder leading to DoS](https://junglewise.ai/threats/cve-2026-56745-netty-memory-leak-in-spdyhttpdecoder-leading-to-dos) (high, CVSS 4, published 21 Jul 2026)

## Most severe Netty Project vulnerabilities

- [CVE-2026-47691: Netty DNS cache poisoning via insufficient NS record bailiwick validation](https://junglewise.ai/threats/cve-2026-47691-netty-dns-cache-poisoning-via-insufficient-ns-record-bailiwick) (high, CVSS 8.7, published 12 Jun 2026)
- [CVE-2026-45674: Netty DNS cache poisoning via missing CNAME bailiwick validation](https://junglewise.ai/threats/cve-2026-45674-netty-dns-cache-poisoning-via-missing-cname-bailiwick-validation) (high, CVSS 8.7, published 12 Jun 2026)
- [CVE-2026-44249: Netty IPv6 subnet filter bypass in netty-handler](https://junglewise.ai/threats/cve-2026-44249-netty-ipv6-subnet-filter-bypass-in-netty-handler) (high, CVSS 8.1, published 11 Jun 2026)
- [CVE-2026-33871: Netty Denial of Service via HTTP/2 CONTINUATION frame flood](https://junglewise.ai/threats/cve-2026-33871-netty-denial-of-service-via-http-2-continuation-frame-flood) (high, CVSS 7.5, published 27 Mar 2026)
- [CVE-2026-42578: Netty HTTP header injection in HttpProxyHandler](https://junglewise.ai/threats/cve-2026-42578-netty-http-header-injection-in-httpproxyhandler) (high, CVSS 7.5, published 13 May 2026)
- [CVE-2026-42587: Netty denial of service via decompression limit bypass](https://junglewise.ai/threats/cve-2026-42587-netty-denial-of-service-via-decompression-limit-bypass) (high, CVSS 7.5, published 13 May 2026)
- [CVE-2026-44893: Netty memory leak in HAProxyMessageDecoder SSL TLV parsing](https://junglewise.ai/threats/cve-2026-44893-netty-memory-leak-in-haproxymessagedecoder-ssl-tlv-parsing) (high, CVSS 7.5, published 12 Jun 2026)
- [CVE-2026-50011: Netty memory exhaustion in RedisArrayAggregator](https://junglewise.ai/threats/cve-2026-50011-netty-memory-exhaustion-in-redisarrayaggregator) (high, CVSS 7.5, published 12 Jun 2026)
- [CVE-2026-46340: Netty memory exhaustion in netty-transport-sctp](https://junglewise.ai/threats/cve-2026-46340-netty-memory-exhaustion-in-netty-transport-sctp) (high, CVSS 7.5, published 12 Jun 2026)
- [CVE-2026-44890: Netty memory exhaustion in RedisDecoder](https://junglewise.ai/threats/cve-2026-44890-netty-memory-exhaustion-in-redisdecoder) (high, CVSS 7.5, published 11 Jun 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 11 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 2 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 7 | 0 | 0 |
| 21 Sep 2026 | 4 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Netty Project technologies

- [Netty Project Netty](https://junglewise.ai/threats/technologies/netty-project-netty): 16 vulnerabilities
- [Netty Project Netty Codec HTTP](https://junglewise.ai/threats/technologies/codec-http): 12 vulnerabilities
- [Netty Project Netty Codec Redis](https://junglewise.ai/threats/technologies/codec-redis): 5 vulnerabilities
- [Netty Project Netty Incubator Codec OHTTP](https://junglewise.ai/threats/technologies/incubator-codec-ohttp): 4 vulnerabilities
- [Netty Project Netty netty-codec-http2](https://junglewise.ai/threats/technologies/netty-codec-http2): 4 vulnerabilities
- [Netty Project Netty Codec HAProxy](https://junglewise.ai/threats/technologies/codec-haproxy): 3 vulnerabilities
- [Netty Project Netty Codec HTTP3](https://junglewise.ai/threats/technologies/codec-http3): 3 vulnerabilities
- [Netty Project Netty Handler SSL OCSP](https://junglewise.ai/threats/technologies/netty-handler-ssl-ocsp): 3 vulnerabilities
- [Netty Project Netty Resolver DNS](https://junglewise.ai/threats/technologies/resolver-dns): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Netty Project vulnerabilities", https://junglewise.ai/threats/vendors/netty-project, 9 November 2026.