# Netty-Handler vulnerabilities

Source: https://junglewise.ai/threats/technologies/netty-handler  
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-handler.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Netty-Handler: 0 in the last 7 days and 3 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-62243, was published on 22 August 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 3
- All time: 5 (1 critical, 0 exploited in the wild)

## About Netty-Handler

Java library providing network event handling and protocol support for the Netty framework.

## Latest Netty-Handler vulnerabilities

- [CVE-2026-62243: Netty TLS hostname verification bypass in OpenSSL client](https://junglewise.ai/threats/cve-2026-62243-netty-tls-hostname-verification-bypass-in-openssl-client) (high, CVSS 7.5, published 22 Aug 2026)
- [CVE-2026-75596: Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default…](https://junglewise.ai/threats/cve-2026-75596-netty-quadratic-pre-handshake-clienthello-reassembly-in-sni) (high, CVSS 7.5, published 19 Aug 2026)
- [CVE-2026-75595: Netty SNI routing bypass via fragmented TLS ClientHello](https://junglewise.ai/threats/cve-2026-75595-netty-sni-routing-bypass-via-fragmented-tls-clienthello) (critical, CVSS 9.1, published 19 Aug 2026)
- [CVE-2026-50010: Netty disabled TLS hostname verification in netty-handler](https://junglewise.ai/threats/cve-2026-50010-netty-disabled-tls-hostname-verification-in-netty-handler) (high, CVSS 7.5, published 12 Jun 2026)
- [CVE-2026-45416: Netty excessive memory allocation in SNIHandler](https://junglewise.ai/threats/cve-2026-45416-netty-excessive-memory-allocation-in-snihandler) (high, CVSS 7.5, published 12 Jun 2026)

## Most severe Netty-Handler vulnerabilities

- [CVE-2026-75595: Netty SNI routing bypass via fragmented TLS ClientHello](https://junglewise.ai/threats/cve-2026-75595-netty-sni-routing-bypass-via-fragmented-tls-clienthello) (critical, CVSS 9.1, published 19 Aug 2026)
- [CVE-2026-45416: Netty excessive memory allocation in SNIHandler](https://junglewise.ai/threats/cve-2026-45416-netty-excessive-memory-allocation-in-snihandler) (high, CVSS 7.5, published 12 Jun 2026)
- [CVE-2026-50010: Netty disabled TLS hostname verification in netty-handler](https://junglewise.ai/threats/cve-2026-50010-netty-disabled-tls-hostname-verification-in-netty-handler) (high, CVSS 7.5, published 12 Jun 2026)
- [CVE-2026-75596: Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, the default…](https://junglewise.ai/threats/cve-2026-75596-netty-quadratic-pre-handshake-clienthello-reassembly-in-sni) (high, CVSS 7.5, published 19 Aug 2026)
- [CVE-2026-62243: Netty TLS hostname verification bypass in OpenSSL client](https://junglewise.ai/threats/cve-2026-62243-netty-tls-hostname-verification-bypass-in-openssl-client) (high, CVSS 7.5, published 22 Aug 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 3 | 1 | 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 technologies

- [Netty](https://junglewise.ai/threats/technologies/netty): 25 vulnerabilities
- [Netty-Codec-Http](https://junglewise.ai/threats/technologies/netty-netty-codec-http): 18 vulnerabilities
- [Netty Codec HTTP/3](https://junglewise.ai/threats/technologies/codec-http-3): 4 vulnerabilities
- [Netty-Codec-Http3](https://junglewise.ai/threats/technologies/netty-codec-http3): 4 vulnerabilities
- [Netty TCNative](https://junglewise.ai/threats/technologies/tcnative): 4 vulnerabilities
- [Netty-Resolver-Dns](https://junglewise.ai/threats/technologies/netty-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-Handler vulnerabilities", https://junglewise.ai/threats/technologies/netty-handler, 9 November 2026.