# Netty Project Netty netty-codec-http2 vulnerabilities

Source: https://junglewise.ai/threats/technologies/netty-codec-http2  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/netty-codec-http2.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in Netty Project Netty netty-codec-http2: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-59900, was published on 29 July 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 4 (0 critical, 0 exploited in the wild)

## About Netty Project Netty netty-codec-http2

An event-driven asynchronous network application framework for rapid development of maintainable high performance protocol servers & clients.

## Latest Netty Project Netty netty-codec-http2 vulnerabilities

- [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-2026-56819: 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-2026-48043: Netty memory exhaustion in DelegatingDecompressorFrameListener](https://junglewise.ai/threats/cve-2026-48043-netty-memory-exhaustion-in-delegatingdecompressorframelistener) (medium, CVSS 5.3, published 12 Jun 2026)
- [CVE-2026-47244: Netty uncontrolled resource consumption in HTTP/2 codec](https://junglewise.ai/threats/cve-2026-47244-netty-uncontrolled-resource-consumption-in-http-2-codec) (medium, CVSS 5.3, published 12 Jun 2026)

## Most severe Netty Project Netty netty-codec-http2 vulnerabilities

- [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-2026-48043: Netty memory exhaustion in DelegatingDecompressorFrameListener](https://junglewise.ai/threats/cve-2026-48043-netty-memory-exhaustion-in-delegatingdecompressorframelistener) (medium, CVSS 5.3, published 12 Jun 2026)
- [CVE-2026-47244: Netty uncontrolled resource consumption in HTTP/2 codec](https://junglewise.ai/threats/cve-2026-47244-netty-uncontrolled-resource-consumption-in-http-2-codec) (medium, CVSS 5.3, published 12 Jun 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)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 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 |

## Other 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 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 Netty netty-codec-http2 vulnerabilities", https://junglewise.ai/threats/technologies/netty-codec-http2, 9 November 2026.