Technology · Netty Project
Netty Project Netty Codec HTTP vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 12 vulnerabilities in Netty Project Netty Codec HTTP: 1 in the last 7 days and 7 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.
- Last 7 days
- 1
- Last 90 days
- 7
- Critical, all time
- 0
- Exploited in the wild
- 0
About Netty Project Netty Codec HTTP
An HTTP codec implementation for the Netty event-driven network application framework.
Latest Netty Project Netty Codec HTTP vulnerabilities
- CVE-2026-100666: Netty HttpServerCodec response desynchronizationhighCVSS 7.3
- CVE-2026-59899: Netty resource exhaustion in HttpContentEncoder via HTTP pipeliningmediumCVSS 4EPSS 0.6%
- CVE-2026-59921: Netty CRLF injection in HttpPostRequestEncoder multipart filenamesmediumCVSS 5.7EPSS 0.5%
- CVE-2026-56746: Netty security bypass in CorsHandler origin evaluationmediumCVSS 6.5EPSS 0.4%
- CVE-2026-56745: Netty memory leak in SpdyHttpDecoder leading to DoShighCVSS 4EPSS 0.6%
- CVE-2026-55833: Netty resource exhaustion in SPDY header decodinghighCVSS 7.5EPSS 0.7%
- CVE-2026-55831: Netty resource exhaustion in SPDY SETTINGS decoderhighCVSS 7.5EPSS 0.7%
- CVE-2026-50020: Netty HTTP request smuggling in HttpObjectDecodermediumCVSS 5.3EPSS 0.4%
- CVE-2026-42587: Netty denial of service via decompression limit bypasshighCVSS 7.5EPSS 1.1%
- CVE-2026-42585: Netty HTTP request smuggling via malformed Transfer-EncodingmediumCVSS 6.5EPSS 0.3%
- CVE-2026-42584: Netty HttpClientCodec response desynchronizationhighCVSS 7.3EPSS 0.7%
- CVE-2026-42581: Netty HTTP request smuggling in HttpObjectDecodermediumCVSS 5.8EPSS 0.7%
Most severe Netty Project Netty Codec HTTP vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-42587: Netty denial of service via decompression limit bypasshighCVSS 7.5EPSS 1.1%
- CVE-2026-55833: Netty resource exhaustion in SPDY header decodinghighCVSS 7.5EPSS 0.7%
- CVE-2026-55831: Netty resource exhaustion in SPDY SETTINGS decoderhighCVSS 7.5EPSS 0.7%
- CVE-2026-42584: Netty HttpClientCodec response desynchronizationhighCVSS 7.3EPSS 0.7%
- CVE-2026-100666: Netty HttpServerCodec response desynchronizationhighCVSS 7.3
- CVE-2026-56745: Netty memory leak in SpdyHttpDecoder leading to DoShighCVSS 4EPSS 0.6%
- CVE-2026-56746: Netty security bypass in CorsHandler origin evaluationmediumCVSS 6.5EPSS 0.4%
- CVE-2026-42585: Netty HTTP request smuggling via malformed Transfer-EncodingmediumCVSS 6.5EPSS 0.3%
- CVE-2026-42581: Netty HTTP request smuggling in HttpObjectDecodermediumCVSS 5.8EPSS 0.7%
- CVE-2026-59921: Netty CRLF injection in HttpPostRequestEncoder multipart filenamesmediumCVSS 5.7EPSS 0.5%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 4 | 0 | |
| 27 Jul 2026 | 2 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 1 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/codec-http.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Netty Project Netty Codec HTTP vulnerabilities", https://junglewise.ai/threats/technologies/codec-http, 26 September 2026.