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      "text" : "An update for rhc is now available for Red Hat Enterprise Linux 8.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
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      "text" : "rhc is a client tool and daemon that connects the system to Red Hat hosted services enabling system and subscription management.\n\nSecurity Fix(es):\n\n* google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186)\n\nFor 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.",
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      "text" : "A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 `:path` pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed `:path` that omits the mandatory leading slash. This allows the attacker to bypass defined security policies, potentially leading to unauthorized access to services or information disclosure.",
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      "text" : "google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation",
      "title" : "Vulnerability summary"
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    "release_date" : "2026-03-20T22:23:32.147000+00:00",
    "remediations" : [ {
      "category" : "vendor_fix",
      "date" : "2026-04-23T19:40:23+00:00",
      "details" : "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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      "restart_required" : {
        "category" : "none"
      },
      "url" : "https://access.redhat.com/errata/RHSA-2026:10107"
    }, {
      "category" : "workaround",
      "details" : "To mitigate this issue, implement infrastructure-level normalization to ensure all incoming HTTP/2 `:path` headers are properly formatted with a leading slash before reaching the gRPC-Go server. This can be achieved by configuring a reverse proxy or API gateway to validate and normalize the `:path` header. Ensure that any such intermediary is properly configured and restarted to apply the changes, which may temporarily impact service availability.",
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    "scores" : [ {
      "cvss_v3" : {
        "attackComplexity" : "LOW",
        "attackVector" : "NETWORK",
        "availabilityImpact" : "NONE",
        "baseScore" : 9.1,
        "baseSeverity" : "CRITICAL",
        "confidentialityImpact" : "HIGH",
        "integrityImpact" : "HIGH",
        "privilegesRequired" : "NONE",
        "scope" : "UNCHANGED",
        "userInteraction" : "NONE",
        "vectorString" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
        "version" : "3.1"
      },
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    "threats" : [ {
      "category" : "impact",
      "details" : "Important"
    } ],
    "title" : "google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation"
  } ]
}