{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "7.0.0"
              },
              {
                "last_affected": "7.0.109"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "e498667bd7811e846771a852b16ce9f1e524b81b"
            },
            {
              "last_affected": "2cdef2c0241cdf70b5edd88d3733a52e6b675047"
            }
          ],
          "repo": "https://github.com/apache/tomcat",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "apache",
    "cwe_ids": [
      "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68569.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": "9.0.0.M1"
          },
          {
            "last_affected": "9.0.120"
          },
          {
            "introduced": "8.5.0"
          },
          {
            "last_affected": "8.5.100"
          },
          {
            "introduced": "7.0.0"
          },
          {
            "last_affected": "70.109"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "11.0.0-M1"
          },
          {
            "fixed": "11.0.24"
          },
          {
            "introduced": "10.1.0-M1"
          },
          {
            "fixed": "10.1.57"
          },
          {
            "introduced": "9.0.0.M1"
          },
          {
            "fixed": "9.0.120"
          },
          {
            "introduced": "8.5.0"
          },
          {
            "fixed": "8.5.100"
          },
          {
            "introduced": "7.0.0"
          },
          {
            "fixed": "7.0.109"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm.\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 9.0.0.M1 through 9.0.120.\n\n\n\n\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected.\n\n\n\n\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-2026-68569",
  "modified": "2026-08-28T03:30:51.742178936Z",
  "published": "2026-08-25T21:59:17.438Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/08/26/8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68569.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread/8robqo76q0osxgw0b5lcwgz0hcf9h4zc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68569"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Tomcat: Principal lookup can fail open in some cases"
}