{
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      "text" : "Low"
    },
    "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\nexpat:\n  * expat-2.8.0-0.1.hum1 (aarch64, x86_64)\n  * expat-devel-2.8.0-0.1.hum1 (aarch64, x86_64)\n  * expat-static-2.8.0-0.1.hum1 (aarch64, x86_64)\n  * expat-2.8.0-0.1.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-2026:11004",
      "url" : "https://access.redhat.com/errata/RHSA-2026:11004"
    }, {
      "category" : "external",
      "summary" : "https://images.redhat.com/",
      "url" : "https://images.redhat.com/"
    }, {
      "category" : "external",
      "summary" : "https://access.redhat.com/security/cve/CVE-2026-41080",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-41080"
    }, {
      "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_11004.json"
    } ],
    "title" : "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking" : {
      "current_release_date" : "2026-04-27T19:45:14+00:00",
      "generator" : {
        "date" : "2026-04-27T19:45:14+00:00",
        "engine" : {
          "name" : "Red Hat SDEngine",
          "version" : "4.7.5"
        }
      },
      "id" : "RHSA-2026:11004",
      "initial_release_date" : "2026-04-27T18:40:20+00:00",
      "revision_history" : [ {
        "date" : "2026-04-27T18:40:20+00:00",
        "number" : "1",
        "summary" : "Initial version"
      }, {
        "date" : "2026-04-27T19:15:15+00:00",
        "number" : "2",
        "summary" : "Last updated version"
      }, {
        "date" : "2026-04-27T19:45:14+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" : "expat-main@aarch64",
          "product" : {
            "name" : "expat-main@aarch64",
            "product_id" : "expat-main@aarch64",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/expat@2.8.0-0.1.hum1?arch=aarch64&distro=hummingbird-20251124&repository_id=public-hummingbird-aarch64-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "aarch64"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "expat-main@src",
          "product" : {
            "name" : "expat-main@src",
            "product_id" : "expat-main@src",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/expat@2.8.0-0.1.hum1?arch=src&distro=hummingbird-20251124&repository_id=public-hummingbird-source-rpms"
            }
          }
        } ],
        "category" : "architecture",
        "name" : "src"
      }, {
        "branches" : [ {
          "category" : "product_version",
          "name" : "expat-main@x86_64",
          "product" : {
            "name" : "expat-main@x86_64",
            "product_id" : "expat-main@x86_64",
            "product_identification_helper" : {
              "purl" : "pkg:rpm/redhat/expat@2.8.0-0.1.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" : "expat-main@aarch64 as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:expat-main@aarch64"
      },
      "product_reference" : "expat-main@aarch64",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    }, {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "expat-main@src as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:expat-main@src"
      },
      "product_reference" : "expat-main@src",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    }, {
      "category" : "default_component_of",
      "full_product_name" : {
        "name" : "expat-main@x86_64 as a component of Red Hat Hardened Images",
        "product_id" : "Red Hat Hardened Images:expat-main@x86_64"
      },
      "product_reference" : "expat-main@x86_64",
      "relates_to_product_reference" : "Red Hat Hardened Images"
    } ]
  },
  "vulnerabilities" : [ {
    "cve" : "CVE-2026-41080",
    "cwe" : {
      "id" : "CWE-331",
      "name" : "Insufficient Entropy"
    },
    "discovery_date" : "2026-04-16T17:01:06.076498+00:00",
    "ids" : [ {
      "system_name" : "Red Hat Bugzilla ID",
      "text" : "2458967"
    } ],
    "notes" : [ {
      "category" : "description",
      "text" : "A flaw was found in libexpat. A remote attacker could exploit this vulnerability by providing a specially crafted XML document that leverages insufficient entropy in the hash function. This can lead to hash flooding, a type of Denial of Service (DoS) attack, where the system becomes unresponsive or crashes due to excessive resource consumption.",
      "title" : "Vulnerability description"
    }, {
      "category" : "summary",
      "text" : "libexpat: expat: libexpat: Denial of Service via hash flooding with crafted XML",
      "title" : "Vulnerability summary"
    }, {
      "category" : "other",
      "text" : "This Low impact denial of service flaw in libexpat could allow a remote attacker to cause the program consuming libexpat to become unresponsive or crash. This vulnerability requires the processing of a specially crafted XML document, which could lead to excessive resource consumption due to hash flooding.",
      "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:expat-main@aarch64", "Red Hat Hardened Images:expat-main@src", "Red Hat Hardened Images:expat-main@x86_64" ]
    },
    "references" : [ {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-41080"
    }, {
      "category" : "external",
      "summary" : "RHBZ#2458967",
      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2458967"
    }, {
      "category" : "external",
      "summary" : "https://www.cve.org/CVERecord?id=CVE-2026-41080",
      "url" : "https://www.cve.org/CVERecord?id=CVE-2026-41080"
    }, {
      "category" : "external",
      "summary" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41080",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41080"
    }, {
      "category" : "external",
      "summary" : "https://github.com/libexpat/libexpat/issues/47",
      "url" : "https://github.com/libexpat/libexpat/issues/47"
    }, {
      "category" : "external",
      "summary" : "https://github.com/libexpat/libexpat/pull/1183",
      "url" : "https://github.com/libexpat/libexpat/pull/1183"
    } ],
    "release_date" : "2026-04-16T16:52:01.177000+00:00",
    "remediations" : [ {
      "category" : "vendor_fix",
      "date" : "2026-04-27T18:40:20+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:expat-main@aarch64", "Red Hat Hardened Images:expat-main@src", "Red Hat Hardened Images:expat-main@x86_64" ],
      "restart_required" : {
        "category" : "none"
      },
      "url" : "https://access.redhat.com/errata/RHSA-2026:11004"
    }, {
      "category" : "workaround",
      "details" : "Applications that process untrusted XML documents using libexpat should implement robust input validation to filter out malicious XML structures. Restricting access to services that process untrusted XML can also reduce the attack surface. If a service is affected, restarting it may be required after implementing input validation or access restrictions.",
      "product_ids" : [ "Red Hat Hardened Images:expat-main@aarch64", "Red Hat Hardened Images:expat-main@src", "Red Hat Hardened Images:expat-main@x86_64" ]
    } ],
    "scores" : [ {
      "cvss_v3" : {
        "attackComplexity" : "HIGH",
        "attackVector" : "NETWORK",
        "availabilityImpact" : "LOW",
        "baseScore" : 3.7,
        "baseSeverity" : "LOW",
        "confidentialityImpact" : "NONE",
        "integrityImpact" : "NONE",
        "privilegesRequired" : "NONE",
        "scope" : "UNCHANGED",
        "userInteraction" : "NONE",
        "vectorString" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
        "version" : "3.1"
      },
      "products" : [ "Red Hat Hardened Images:expat-main@aarch64", "Red Hat Hardened Images:expat-main@src", "Red Hat Hardened Images:expat-main@x86_64" ]
    } ],
    "threats" : [ {
      "category" : "impact",
      "details" : "Low"
    } ],
    "title" : "libexpat: expat: libexpat: Denial of Service via hash flooding with crafted XML"
  } ]
}