High 7.5Published Sep 18, 2026

CVE-2026-93567Io.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/2 connect with host-controlled :authority

Updated under an hour ago (2026-10-19 08:50 UTC)

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It affects Red Hat Build of Apache Camel 3.33.3.SP2 and 12 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Red Hat Build of Apache Camel 3.33.3.SP2

Exploited in the last 30 days

A flaw was found in Netty's HTTP/2 codec. When converting HTTP/1 CONNECT requests to HTTP/2, the component incorrectly uses the Host header instead of the CONNECT authority-form request-target for the tunnel authority. A remote attacker can exploit this by supplying a different Host header, leading to a malformed HTTP/2 CONNECT request. This can bypass security controls such as tunnel allow-lists or egress policies, resulting in integrity loss.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Awaiting Analysis
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat Build of Apache Camel 3.33.3.SP2 redhat:apache_camel_quarkus	from 4.1.138.Final-redhat-00001 not affected	CNA record
Red Hat Red Hat Build of Debezium 3.6 redhat:debezium	3.6	CNA record
Red Hat Red Hat build of Quarkus 3.27.5.SP2 redhat:quarkus	3.27	CNA record
Red Hat Red Hat AMQ Broker 7 redhat:amq_broker	7	CNA record
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 redhat:camel_quarkus	3	CNA record
Red Hat Red Hat build of Apache Camel for Spring Boot 4 redhat:camel_spring_boot	4	CNA record
Red Hat Red Hat build of Apicurio Registry 3 redhat:apicurio_registry	3	CNA record
Red Hat Red Hat Build of Keycloak redhat:build_keycloak	All versions	CNA record
Red Hat Red Hat Data Grid 8 redhat:jboss_data_grid	8	CNA record
Red Hat Red Hat Fuse 7 redhat:jboss_fuse	7	CNA record
Red Hat Red Hat JBoss Enterprise Application Platform 7 redhat:jboss_enterprise_application_platform	7	CNA record
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack redhat:jbosseapxp	All versions	CNA record
Red Hat Red Hat Single Sign-On 7 redhat:red_hat_single_sign_on	7	CNA record

References

https://access.redhat.com/errata/RHSA-2026:69440vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:69470vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:70257vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:83612vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2026-93567vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2536955issue-tracking, x-refsource-redhat

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.