8.2
High
CVE-2026-93569 Io.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authority
Description
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 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:NExploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- High
- Availability
- None
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat AMQ Broker 7 | Versions not published | |
| Red Hat build of Apache Camel 4 for Quarkus 3 | Versions not published | |
| Red Hat build of Apache Camel for Spring Boot 4 | Versions not published | |
| Red Hat build of Apicurio Registry 3 | Versions not published | |
| Red Hat build of Debezium 3 | Versions not published | |
| Red Hat Build of Keycloak | Versions not published | |
| Red Hat build of Quarkus | Versions not published | |
| Red Hat Data Grid 8 | Versions not published | |
| Red Hat Fuse 7 | Versions not published |
Show the 11 other branches Hide the 11 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform 7 | Versions not published | |
| Red Hat JBoss Enterprise Application Platform 8 | Versions not published | |
| Red Hat Single Sign-On 7 | Versions not published | |
| Red Hat Build of Apache Camel 3.33.3.SP2 4.1 | earliest → < 4.1.138.Final-redhat-00001 | 4.1.138.Final-redhat-00001 |
| Red Hat build of Quarkus 3.27.5.SP2 | Versions not published | |
| Red Hat build of Quarkus 3.33.3.SP2 | Versions not published | |
| Red Hat Build of Debezium 3.6 | Versions not published | |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Versions not published | |
| Red Hat JBoss Enterprise Application Platform 8.1 | Versions not published | |
| Red Hat build of Keycloak 26.4 26.4 | earliest → < 26.4-30 | 26.4-30 |
| Red Hat build of Keycloak 26.6.8 | Versions not published |
References
- RHSA-2026:69440 access.redhat.com
- RHSA-2026:69470 access.redhat.com
- RHSA-2026:70257 access.redhat.com
- RHSA-2026:83612 access.redhat.com
- RHSA-2026:95221 access.redhat.com
- RHSA-2026:95760 access.redhat.com
- RHSA-2026:95761 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2536962 bugzilla.redhat.com
Timeline
- Published
- Last modified
Other CVEs of Red Hat AMQ Broker 7
The 88 CVEs of Red Hat AMQ Broker 7 →
CVE-2026-96453
Org.keycloak/keycloak-admin-cli: keycloak-admin-cli: kcadm custom truststore accepts arbitrary self-signed certificates
8.0
High
CVE-2026-93998
Keycloak-core: keycloak-core: saml adapter does not bind signed assertions to the configured identity provider issuer
7.4
High
CVE-2026-101292
Apache ActiveMQ Artemis before 2.34.0 contains an unsafe reflection vulnerability in…
8.2
High
CVE-2026-93562
Io.netty/netty-codec-http: netty: incomplete validation of malformed transfer-encoding allows http request smuggling
6.5
Medium