{
  "document": {
    "aggregate_severity": {
      "text": "High"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "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 Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/ubuntu16.04els/vex/2026/cve-2026-47783-els_os-ubuntu16_04els.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-08-12T13:00:06Z",
      "generator": {
        "date": "2026-08-12T13:00:05Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2026-47783-ELS_OS-UBUNTU16.04ELS",
      "initial_release_date": "2026-05-20T07:16:00Z",
      "revision_history": [
        {
          "date": "2026-05-20T07:16:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-08-02T04:23:20Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2026-08-11T18:34:30Z",
          "number": "3",
          "summary": "Update document"
        },
        {
          "date": "2026-08-12T13:00:06Z",
          "number": "4",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "4"
    },
    "title": "Security update on CVE-2026-47783"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Ubuntu 16.04",
                "product": {
                  "name": "Ubuntu 16.04",
                  "product_id": "Ubuntu-16",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Ubuntu"
          }
        ],
        "category": "vendor",
        "name": "Canonical Ltd."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64",
                "product": {
                  "name": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64",
                  "product_id": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64",
                  "product_identification_helper": {
                    "purl": "pkg:deb/cloudlinux/memcached@1.4.25-2ubuntu1.5%2Btuxcare.els1?arch=amd64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          }
        ],
        "category": "vendor",
        "name": "CloudLinux"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64 as a component of Ubuntu 16.04",
          "product_id": "Ubuntu-16:memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64"
        },
        "product_reference": "memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64",
        "relates_to_product_reference": "Ubuntu-16"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-47783",
      "cwe": {
        "id": "CWE-208",
        "name": "Observable Timing Discrepancy"
      },
      "notes": [
        {
          "category": "description",
          "text": "In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "Ubuntu-16:memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-47783"
        },
        {
          "category": "external",
          "summary": "https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed",
          "url": "https://github.com/memcached/memcached/commit/d13f282b4bce33a9c33b8a1bbf07f12114160fed"
        },
        {
          "category": "external",
          "summary": "https://github.com/memcached/memcached/compare/1.6.41...1.6.42",
          "url": "https://github.com/memcached/memcached/compare/1.6.41...1.6.42"
        },
        {
          "category": "external",
          "summary": "https://github.com/memcached/memcached/wiki/ReleaseNotes1642",
          "url": "https://github.com/memcached/memcached/wiki/ReleaseNotes1642"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:27842",
          "url": "https://access.redhat.com/errata/RHSA-2026:27842"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:27862",
          "url": "https://access.redhat.com/errata/RHSA-2026:27862"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/security/cve/CVE-2026-47783",
          "url": "https://access.redhat.com/security/cve/CVE-2026-47783"
        },
        {
          "category": "external",
          "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2480089",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480089"
        },
        {
          "category": "external",
          "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-47783.json",
          "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-47783.json"
        }
      ],
      "release_date": "2026-05-20T07:16:00Z",
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        },
        {
          "category": "impact",
          "date": "2026-08-11T12:33:02.330683Z",
          "details": "important",
          "product_ids": [
            "Ubuntu-16:memcached-0:1.4.25-2ubuntu1.5+tuxcare.els1.amd64"
          ]
        }
      ]
    }
  ]
}