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  "document": {
    "aggregate_severity": {
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
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        "url": "https://www.first.org/tlp/"
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      {
        "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"
      },
      {
        "category": "details",
        "text": "* SECURITY UPDATE: fix the handling of invalid users with DIGEST\n     authentication\n     - debian/patches/CVE-2026-43512.patch: short-cut the null password case\n       in RealmBase.getDigest()\n     - CVE-2026-43512\n   * SECURITY UPDATE: account lockout bypass via username case variation\n     - debian/patches/CVE-2026-43513.patch: add case sensitive attribute to\n       LockOutRealm and normalise usernames before tracking failures\n     - CVE-2026-43513\n   * SECURITY UPDATE: authorization bypass with extension-based method\n     constraints\n     - debian/patches/CVE-2026-43515.patch: ensure RealmBase finds all\n       matching extension based constraints\n     - CVE-2026-43515",
        "title": "Details"
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        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1782900813",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1782900813"
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        "url": "https://security.tuxcare.com/csaf/v2/els_os/ubuntu16.04els/advisories/2026/clsa-2026_1782900813.json"
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      "current_release_date": "2026-07-02T07:43:23Z",
      "generator": {
        "date": "2026-07-02T07:43:23Z",
        "engine": {
          "name": "pyCSAF"
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      "id": "CLSA-2026:1782900813",
      "initial_release_date": "2026-07-01T10:13:56Z",
      "revision_history": [
        {
          "date": "2026-07-01T10:13:56Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-07-02T07:43:23Z",
          "number": "2",
          "summary": "Official Publication"
        }
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      "status": "final",
      "version": "2"
    },
    "title": "Fix CVE(s): CVE-2026-43512, CVE-2026-43513, CVE-2026-43515"
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          "product_id": "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els1.all"
        },
        "product_reference": "tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
        "relates_to_product_reference": "Ubuntu-16"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-43512",
      "cwe": {
        "id": "CWE-592",
        "name": "DEPRECATED: Authentication Bypass Issues"
      },
      "notes": [
        {
          "category": "description",
          "text": "DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0.\nOlder unsupported versions any also be affect\n\nUsers are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els2.all"
        ],
        "known_affected": [
          "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-43512"
        },
        {
          "category": "external",
          "summary": "https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73",
          "url": "https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2026/05/12/8",
          "url": "http://www.openwall.com/lists/oss-security/2026/05/12/8"
        }
      ],
      "release_date": "2026-05-12T16:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-01T10:13:56.871053Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1782900813",
          "product_ids": [
            "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els2.all"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1782900813"
        },
        {
          "category": "none_available",
          "date": "2026-05-12T16:16:00Z",
          "details": "Affected",
          "product_ids": [
            "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els1.all"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ]
    },
    {
      "cve": "CVE-2026-43515",
      "cwe": {
        "id": "CWE-285",
        "name": "Improper Authorization"
      },
      "notes": [
        {
          "category": "description",
          "text": "Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\n\nUsers are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els2.all"
        ],
        "known_affected": [
          "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-43515"
        },
        {
          "category": "external",
          "summary": "https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb",
          "url": "https://lists.apache.org/thread/746nxfxod0wsocxtmv8pb8nkgmwpc6bb"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2026/05/12/11",
          "url": "http://www.openwall.com/lists/oss-security/2026/05/12/11"
        }
      ],
      "release_date": "2026-05-12T16:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-01T10:13:56.871053Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1782900813",
          "product_ids": [
            "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els2.all"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1782900813"
        },
        {
          "category": "none_available",
          "date": "2026-05-12T16:16:00Z",
          "details": "Affected",
          "product_ids": [
            "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els1.all"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ]
    },
    {
      "cve": "CVE-2026-43513",
      "cwe": {
        "id": "CWE-178",
        "name": "Improper Handling of Case Sensitivity"
      },
      "notes": [
        {
          "category": "description",
          "text": "Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\nOlder unsupported versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
          "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els2.all"
        ],
        "known_affected": [
          "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
          "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-43513"
        },
        {
          "category": "external",
          "summary": "https://lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp",
          "url": "https://lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2026/05/12/9",
          "url": "http://www.openwall.com/lists/oss-security/2026/05/12/9"
        }
      ],
      "release_date": "2026-05-12T16:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-07-01T10:13:56.871053Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1782900813",
          "product_ids": [
            "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els2.all",
            "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els2.all"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1782900813"
        },
        {
          "category": "none_available",
          "date": "2026-05-12T16:16:00Z",
          "details": "Affected",
          "product_ids": [
            "Ubuntu-16:libservlet3.1-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:libservlet3.1-java-doc-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:libtomcat8-java-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-admin-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-common-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-docs-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-examples-0:8.0.32-1ubuntu1.13+tuxcare.els1.all",
            "Ubuntu-16:tomcat8-user-0:8.0.32-1ubuntu1.13+tuxcare.els1.all"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ]
    }
  ]
}