Threats Tagged 'cve-2026-66794'

Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which add new features and enhancements, bug fixes, and updated container images. See the following Release Notes documentation, which will be updated shortly for this release, for additional details about this release: https://docs.redhat.com/en/documentation/red_hat_advanced_cluster_management_for_kubernetes/2.16/html-single/release_notes/index#acm-release-notes

CVE-2026-66794 is a critical Server-Side Request Forgery (SSRF) vulnerability in the cluster-proxy-addon component of Red Hat multicluster engine for Kubernetes 2.10. It allows an unauthenticated attacker with access to the user-facing route to bypass authentication and authorization by manipulating URL path segments. This enables proxying requests to arbitrary services across managed clusters, potentially exposing internal services and leading to information disclosure or further cluster compromise.

A flaw was found in the `cluster-proxy-addon` component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy requests to arbitrary services across any managed cluster. This enables unauthorized access to internal services that would otherwise be protected, potentially leading to information disclosure or further compromise of the cluster environment.

Collector with the supported components for a Red Hat build of OpenTelemetry Security Fix(es): * golang: net/http: net/http: sensitive headers incorrectly sent after cross-domain redirect (CVE-2024-45336) * go-jose: Go JOSE's Parsing Vulnerable to Denial of Service (CVE-2025-27144) * golang.org/x/oauth2/jws: Unexpected memory consumption during token parsing in golang.org/x/oauth2/jws (CVE-2025-22868) * github.com/expr-lang/expr: Memory Exhaustion in Expr Parser with Unrestricted Input (CVE-2025-29786) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.