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    <link>https://vulnerability.circl.lu</link>
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      <title>fkie_cve-2026-71577</title>
      <link>https://vulnerability.circl.lu/vuln/fkie_cve-2026-71577</link>
      <description>&lt;p&gt;A flaw was found in multicluster-global-hub. During a ManagedClusterMigration, the system incorrectly grants all managed hubs read access to a shared communication topic. This allows a compromised managed hub to intercept and collect sensitive bootstrap kubeconfigs, which contain API server tokens intended for other hubs. These tokens have an extended validity of approximately 9.86 years, significantly increasing the risk of unauthorized access and information disclosure to other managed clusters.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;A flaw was found in multicluster-global-hub. During a ManagedClusterMigration, the system incorrectly grants all managed hubs read access to a shared communication topic. This allows a compromised managed hub to intercept and collect sensitive bootstrap kubeconfigs, which contain API server tokens intended for other hubs. These tokens have an extended validity of approximately 9.86 years, significantly increasing the risk of unauthorized access and information disclosure to other managed clusters.&lt;/p&gt;</content:encoded>
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      <title>GHSA-v7q5-q7p3-9vjm</title>
      <link>https://vulnerability.circl.lu/vuln/ghsa-v7q5-q7p3-9vjm</link>
      <description>&lt;p&gt;A flaw was found in multicluster-global-hub. During a ManagedClusterMigration, the system incorrectly grants all managed hubs read access to a shared communication topic. This allows a compromised managed hub to intercept and collect sensitive bootstrap kubeconfigs, which contain API server tokens intended for other hubs. These tokens have an extended validity of approximately 9.86 years, significantly increasing the risk of unauthorized access and information disclosure to other managed clusters.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;A flaw was found in multicluster-global-hub. During a ManagedClusterMigration, the system incorrectly grants all managed hubs read access to a shared communication topic. This allows a compromised managed hub to intercept and collect sensitive bootstrap kubeconfigs, which contain API server tokens intended for other hubs. These tokens have an extended validity of approximately 9.86 years, significantly increasing the risk of unauthorized access and information disclosure to other managed clusters.&lt;/p&gt;</content:encoded>
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      <title>RHSA-2026:67516 — Red Hat Security Advisory: Multicluster Global Hub 1.4.9 security update</title>
      <link>https://vulnerability.circl.lu/vuln/rhsa-2026:67516</link>
      <description>&lt;p&gt;golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal Moby: Moby: Authorization bypass vulnerability github.com/open-telemetry/opentelemetry-go: go.opentelemetry.io/otel/baggage: go.opentelemetry.io/otel/propagation: OpenTelemetry-Go: Denial of Service via oversized baggage headers golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via unexpected HTML tree rendering golang.org/x/image/tiff: golang.org/x/image/tiff: Denial of Service via invalid TIFF image thrift: org.apache.thrift/libthrift: github.com/apache/thrift: Apache Thrift: Denial of Service via improper handling of highly compressed data oras-go: oras-go: Credential forwarding via unvalidated Location header during blob upload golang.org/x/text: golang.org/x/text: Denial of Service via invalid UTF-8 input net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service html/template: golang: Go html/template: Cross-Site Scripting via pathological input encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages multicloud-operators-subscription: multicloud-operators-subscription: IsClusterAdmin() trusts user-settable annotations on managed…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal Moby: Moby: Authorization bypass vulnerability github.com/open-telemetry/opentelemetry-go: go.opentelemetry.io/otel/baggage: go.opentelemetry.io/otel/propagation: OpenTelemetry-Go: Denial of Service via oversized baggage headers golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via unexpected HTML tree rendering golang.org/x/image/tiff: golang.org/x/image/tiff: Denial of Service via invalid TIFF image thrift: org.apache.thrift/libthrift: github.com/apache/thrift: Apache Thrift: Denial of Service via improper handling of highly compressed data oras-go: oras-go: Credential forwarding via unvalidated Location header during blob upload golang.org/x/text: golang.org/x/text: Denial of Service via invalid UTF-8 input net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service html/template: golang: Go html/template: Cross-Site Scripting via pathological input encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages multicloud-operators-subscription: multicloud-operators-subscription: IsClusterAdmin() trusts user-settable annotations on managed…&lt;/p&gt;</content:encoded>
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