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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-56746

CVE-2026-56746: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-56746] Security control bypass allows unauthorized requests via null origin header

    CVE-2026-56746Source published Source updated

    Netty is a network application framework for development of protocol servers and clients. Versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, are vulnerable to security control bypass during the origin evaluation process. CorsHandler provides a shortCircuit() configuration designed to reject unauthorized cross-origin requests immediately, acting as a security control before requests reach the application. However, due to a logical operator error in the origin evaluation process, this protection can be entirely bypassed. An attacker can bypass the short-circuit mechanism by sending a request with an Origin: null header. This failure forwards unauthorized requests to the backend application, bypassing intended access controls. This issue is fixed in versions…

    Affected products in this advisory
    • Red Hat build of Apache Camel 4.18.3 for Spring Boot 3.5.16
    • Red Hat Build of Apache Camel 4.18 for Quarkus 3.33
    • Red Hat build of Quarkus 3.27.4.SP3
    • Red Hat build of Quarkus 3.33.2.SP3

    18 more entries in the full advisory.

    Source-reported affected versions
    • 4.2.0
    • 4.2.15
    • 4.1.0
    • 4.1.135
    Source-reported fixed versions
    • 4.1.136
    • 4.2.16
    • netty-codec-http
    • devspaces/openvsx-rhel9:1787759145

    7 more entries in the full advisory.

    Mitigation guidance
    • If CORS short-circuit functionality is not required, disable the shortCircuit() configuration in the CorsHandler. Alternatively, implement application-level origin validation to reject requests with null Origin headers. A web application firewall (WAF) can also be configured to block requests with null or missing Origin headers.
    Full advisory and evidenceOpen source bulletin

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