High7.5Red Hat Linux

High [CVE-2026-42578] HTTP Header Injection via HttpProxyHandler Disabled Validation

This high-severity Red Hat Linux advisory covers CVE-2026-42578 affecting Cryostat 4 on RHEL 9, Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16, Red Hat build of Quarkus 3.27.4.

CVE-2026-42578 Published May 13, 2026

CVE-2026-42578

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

HTTP Header Injection via HttpProxyHandler Disabled Validation. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-93. Affected package(s): netty-handler-proxy, devspaces/pluginregistry-rhel9:1780696380, cryostat/jfr-datasource-rhel9:4.2.0, devspaces/openvsx-rhel9:1780948325, devspaces/server-rhel9:1780694994, cryostat/cryostat-reports-rhel9:4.2.0.

Resolved in Red Hat advisory RHSA-2026:23808 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16; Red Hat build of Quarkus 3.27.4; Red Hat OpenShift Dev Spaces 3.28; and 19 more.

Affected versions

netty-handler-proxy
devspaces/pluginregistry-rhel9:1780696380
cryostat/jfr-datasource-rhel9:4.2.0-10
devspaces/openvsx-rhel9:1780948325
devspaces/server-rhel9:1780694994
cryostat/cryostat-reports-rhel9:4.2.0-10
cryostat/cryostat-rhel9:4.2.0-10

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:23808

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:23808 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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