{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "7.0.97"
              },
              {
                "last_affected": "7.0.109"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "1cfec207b09fed52965f0d0426059ca989daf3b4"
            },
            {
              "last_affected": "2cdef2c0241cdf70b5edd88d3733a52e6b675047"
            }
          ],
          "repo": "https://github.com/apache/tomcat",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "apache",
    "cwe_ids": [
      "CWE-285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66422.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "11.0.0-M1"
          },
          {
            "last_affected": "11.0.24"
          },
          {
            "introduced": "10.1.0-M1"
          },
          {
            "last_affected": "10.1.57"
          },
          {
            "introduced": "9.0.25"
          },
          {
            "last_affected": "9.0.120"
          },
          {
            "introduced": "8.5.46"
          },
          {
            "last_affected": "8.5.100"
          },
          {
            "introduced": "7.0.97"
          },
          {
            "last_affected": "7.0.109"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "11.0.0-M1"
          },
          {
            "fixed": "11.0.24"
          },
          {
            "introduced": "10.1.0-M1"
          },
          {
            "fixed": "10.1.57"
          },
          {
            "introduced": "9.0.25"
          },
          {
            "fixed": "9.0.120"
          },
          {
            "introduced": "8.5.46"
          },
          {
            "fixed": "8.5.100"
          },
          {
            "introduced": "7.0.97"
          },
          {
            "fixed": "7.0.109"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly used as role aliases within the Realm in additional to the correct usage with Request.isUserInRole().\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.25 through 9.0.120.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.46 through 8.5.100, from 7.0.97 through 7.0.109. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.",
  "id": "CVE-2026-66422",
  "modified": "2026-08-28T03:30:37.580290820Z",
  "published": "2026-08-25T21:55:16.928Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/08/26/6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66422.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread/j5plylz1b2vhqvbkqn7k58nygxhcpk73"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66422"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Tomcat: Servlet role references can bypass declarative role constraints"
}