{
  "document" : {
    "aggregate_severity" : {
      "namespace" : "https://access.redhat.com/security/updates/classification/",
      "text" : "Important"
    },
    "category" : "csaf_security_advisory",
    "csaf_version" : "2.0",
    "distribution" : {
      "text" : "Copyright © Red Hat, Inc. All rights reserved.",
      "tlp" : {
        "label" : "WHITE",
        "url" : "https://www.first.org/tlp/"
      }
    },
    "lang" : "en",
    "notes" : [ {
      "category" : "summary",
      "text" : "An update for Red Hat Hardened Images RPMs is now available.",
      "title" : "Topic"
    }, {
      "category" : "general",
      "text" : "This update includes the following RPMs:\n\nrabbitmq-server4.3:\n  * rabbitmq-server4.3-4.3.4-0.1.hum1 (aarch64, x86_64)\n  * rabbitmq-server4.3-4.3.4-0.1.hum1.src (src)",
      "title" : "Details"
    }, {
      "category" : "legal_disclaimer",
      "text" : "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
      "title" : "Terms of Use"
    } ],
    "publisher" : {
      "category" : "vendor",
      "contact_details" : "https://access.redhat.com/security/team/contact/",
      "issuing_authority" : "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name" : "Red Hat Product Security",
      "namespace" : "https://www.redhat.com"
    },
    "references" : [ {
      "category" : "self",
      "summary" : "https://access.redhat.com/errata/RHSA-2026:45128",
      "url" : "https://access.redhat.com/errata/RHSA-2026:45128"
    }, {
      "category" : "external",
      "summary" : "https://images.redhat.com/",
      "url" : "https://images.redhat.com/"
    }, {
      "category" : "external",
      "summary" : "https://access.redhat.com/security/cve/CVE-2026-44838",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-44838"
    }, {
      "category" : "external",
      "summary" : "https://access.redhat.com/security/updates/classification/",
      "url" : "https://access.redhat.com/security/updates/classification/"
    }, {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_45128.json"
    } ],
    "title" : "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking" : {
      "current_release_date" : "2026-09-06T22:46:36+00:00",
      "generator" : {
        "date" : "2026-09-06T22:46:36+00:00",
        "engine" : {
          "name" : "Red Hat SDEngine",
          "version" : "5.3.16"
        }
      },
      "id" : "RHSA-2026:45128",
      "initial_release_date" : "2026-07-24T09:34:19+00:00",
      "revision_history" : [ {
        "date" : "2026-07-24T09:34:19+00:00",
        "number" : "1",
        "summary" : "Initial version"
      }, {
        "date" : "2026-09-04T00:36:24+00:00",
        "number" : "2",
        "summary" : "Last updated version"
      }, {
        "date" : "2026-09-06T22:46:36+00:00",
        "number" : "3",
        "summary" : "Last generated version"
      } ],
      "status" : "final",
      "version" : "3"
    }
  },
  "product_tree" : {
    "branches" : [ {
      "branches" : [ {
        "branches" : [ {
          "category" : "product_name",
          "name" : "Red Hat Hardened Images",
          "product" : {
            "name" : "Red Hat Hardened Images",
            "product_id" : "Red Hat Hardened Images",
            "product_identification_helper" : {
              "cpe" : "cpe:/a:redhat:hummingbird:1"
            }
          }
        } ],
        "category" : "product_family",
        "name" : "Red Hat Hardened Images"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "rabbitmq-server4-3-main@aarch64",
          "product" : {
            "name" : "rabbitmq-server4-3-main@aarch64",
            "product_id" : "rabbitmq-server4-3-main@aarch64",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/rabbitmq-server4.3@4.3.4-0.1.hum1?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "aarch64"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "rabbitmq-server4-3-main@src",
          "product" : {
            "name" : "rabbitmq-server4-3-main@src",
            "product_id" : "rabbitmq-server4-3-main@src",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/rabbitmq-server4.3@4.3.4-0.1.hum1?arch=src&distro=hummingbird-20251124&repository_id=public-hummingbird-source-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "src"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "rabbitmq-server4-3-main@x86_64",
          "product" : {
            "name" : "rabbitmq-server4-3-main@x86_64",
            "product_id" : "rabbitmq-server4-3-main@x86_64",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/rabbitmq-server4.3@4.3.4-0.1.hum1?arch=x86_64&distro=hummingbird-20251124&repository_id=public-hummingbird-x86_64-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "x86_64"
      } ],
      "category" : "vendor",
      "name" : "Red Hat"
    } ],
    "relationships" : [ {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "rabbitmq-server4-3-main@aarch64 as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:rabbitmq-server4-3-main@aarch64"
      },
      "product_reference" : "rabbitmq-server4-3-main@aarch64",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    }, {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "rabbitmq-server4-3-main@src as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:rabbitmq-server4-3-main@src"
      },
      "product_reference" : "rabbitmq-server4-3-main@src",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    }, {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "rabbitmq-server4-3-main@x86_64 as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:rabbitmq-server4-3-main@x86_64"
      },
      "product_reference" : "rabbitmq-server4-3-main@x86_64",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2026-44838",
    "cwe" : {
      "id" : "CWE-624",
      "name" : "Executable Regular Expression Error"
    },
    "discovery_date" : "2026-05-27T16:01:31.763532+00:00",
    "ids" : [ {
      "system_name" : "Red Hat Bugzilla ID",
      "text" : "2482208"
    } ],
    "notes" : [ {
      "category" : "description",
      "text" : "A flaw was found in RabbitMQ. An authenticated MQTT (Message Queuing Telemetry Transport) user can bypass topic-level authorization by injecting regular expression operators. This occurs because the client ID, provided by the user in the MQTT CONNECT packet, is inserted into authorization regex patterns without proper escaping of special characters. This vulnerability allows an attacker to gain unauthorized access to topics.",
      "title" : "Vulnerability description"
    }, {
      "category" : "summary",
      "text" : "rabbitmq-server: RabbitMQ: Authorization bypass via regular expression injection in MQTT client ID",
      "title" : "Vulnerability summary"
    }, {
      "category" : "other",
      "text" : "Important: An authorization bypass flaw in the RabbitMQ MQTT plugin allows an authenticated user to inject regular expression operators into the client ID, circumventing topic-level access controls. This could lead to unauthorized access to sensitive topics.",
      "title" : "Statement"
    }, {
      "category" : "general",
      "text" : "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
      "title" : "CVSS score applicability"
    } ],
    "product_status" : {
      "fixed" : [ "Red Hat Hardened Images:rabbitmq-server4-3-main@aarch64", "Red Hat Hardened Images:rabbitmq-server4-3-main@src", "Red Hat Hardened Images:rabbitmq-server4-3-main@x86_64" ]
    },
    "references" : [ {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-44838"
    }, {
      "category" : "external",
      "summary" : "RHBZ#2482208",
      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2482208"
    }, {
      "category" : "external",
      "summary" : "https://www.cve.org/CVERecord?id=CVE-2026-44838",
      "url" : "https://www.cve.org/CVERecord?id=CVE-2026-44838"
    }, {
      "category" : "external",
      "summary" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44838",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44838"
    }, {
      "category" : "external",
      "summary" : "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-x866-xp2g-cx8v",
      "url" : "https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-x866-xp2g-cx8v"
    } ],
    "release_date" : "2026-05-27T15:03:57.467000+00:00",
    "remediations" : [ {
      "category" : "vendor_fix",
      "date" : "2026-07-24T09:34:19+00:00",
      "details" : "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
      "product_ids" : [ "Red Hat Hardened Images:rabbitmq-server4-3-main@aarch64", "Red Hat Hardened Images:rabbitmq-server4-3-main@src", "Red Hat Hardened Images:rabbitmq-server4-3-main@x86_64" ],
      "restart_required" : {
        "category" : "none"
      },
      "url" : "https://access.redhat.com/errata/RHSA-2026:45128"
    } ],
    "scores" : [ {
      "cvss_v3" : {
        "attackComplexity" : "LOW",
        "attackVector" : "NETWORK",
        "availabilityImpact" : "NONE",
        "baseScore" : 8.1,
        "baseSeverity" : "HIGH",
        "confidentialityImpact" : "HIGH",
        "integrityImpact" : "HIGH",
        "privilegesRequired" : "LOW",
        "scope" : "UNCHANGED",
        "userInteraction" : "NONE",
        "vectorString" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
        "version" : "3.1"
      },
      "products" : [ "Red Hat Hardened Images:rabbitmq-server4-3-main@aarch64", "Red Hat Hardened Images:rabbitmq-server4-3-main@src", "Red Hat Hardened Images:rabbitmq-server4-3-main@x86_64" ]
    } ],
    "threats" : [ {
      "category" : "impact",
      "details" : "Important"
    } ],
    "title" : "rabbitmq-server: RabbitMQ: Authorization bypass via regular expression injection in MQTT client ID"
  } ]
}