High 8.2Published Sep 18, 2026

CVE-2026-93569Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authority

Updated under an hour ago (2026-10-19 06:50 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. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2 :authority field, discarding the original request-target authority. This inconsistency can allow an attacker to bypass security controls in Netty-based proxies or gateways, potentially leading to unauthorized access, cache poisoning, or misrouting of requests.

CVSS: 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Weakness (CWE): CWE-444
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-2026-93569vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2536962issue-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.