High [CVE-2026-18660] Access control bypass via case-sensitive host filtering
This high-severity Red Hat Linux advisory covers CVE-2026-18660; related products: Exploit Intelligence, OpenShift Developer Tools and Services, OpenShift Serverless.
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Summary
Access control bypass via case-sensitive host filtering. Red Hat rates this important (CVSS 8.2).
Weakness: CWE-178. Red Hat lists fixing advisory RHSA-2026:92858 with package ocp-tools-4/jenkins-rhel8:1792044386, openvox-server-0:8.17.0-1.el8sat, openvox-server-0:8.17.0-1.el9sat, ocp-tools-4/jenkins-rhel8:1792044327.
Affected products named by the advisory: Exploit Intelligence; OpenShift Developer Tools and Services; OpenShift Serverless; Red Hat AMQ Broker 7; and 16 more.
Affected products named by the advisory: Red Hat build of Apache Camel for Spring Boot 4; Red Hat build of Apache Camel - HawtIO 4; Red Hat build of Apicurio Registry 3; Red Hat build of Debezium 3; and 12 more.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
- ocp-tools-4/jenkins-rhel8:1792044386
- openvox-server-0:8.17.0-1.el8sat
- openvox-server-0:8.17.0-1.el9sat
- ocp-tools-4/jenkins-rhel8:1792044327
- ocp-tools-4/jenkins-rhel8:1792044326
- ocp-tools-4/jenkins-rhel9:1792040081
- ocp-tools-4/jenkins-rhel9:1792040096
- ocp-tools-4/jenkins-rhel9:1792040287
- ocp-tools-4/jenkins-rhel9:1792040131
- ocp-tools-4/jenkins-rhel8:1792044382
- ocp-tools-4/jenkins-rhel9:1792040428
- ocp-tools-4/jenkins-rhel9:1792040733
- ocp-tools-4/jenkins-rhel9:1792041514
- RHSA-2026:92858
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
Mitigation checklist
- There is no mitigation for this issue other than applying the fix. As a temporary workaround, administrators who rely on Jetty host allow/deny filtering should add case-variant duplicates of every configured hostname to the filter lists, or enforce hostname case-normalization at an upstream load balancer or reverse proxy, until the update is installed.
Official advisory · high-confidence parse· fetched 16 days ago·verify at source
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