{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
              "cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*",
              "cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*",
              "cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*",
              "cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*",
              "cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "9.0.1"
              },
              {
                "fixed": "9.0.116"
              },
              {
                "introduced": "10.1.0"
              },
              {
                "fixed": "10.1.53"
              },
              {
                "introduced": "11.0.0"
              },
              {
                "fixed": "11.0.20"
              },
              {
                "introduced": "9.0.0-milestone23"
              },
              {
                "last_affected": "9.0.0-milestone23"
              },
              {
                "introduced": "9.0.0-milestone24"
              },
              {
                "last_affected": "9.0.0-milestone24"
              },
              {
                "introduced": "9.0.0-milestone25"
              },
              {
                "last_affected": "9.0.0-milestone25"
              },
              {
                "introduced": "9.0.0-milestone26"
              },
              {
                "last_affected": "9.0.0-milestone26"
              },
              {
                "introduced": "9.0.0-milestone27"
              },
              {
                "last_affected": "9.0.0-milestone27"
              }
            ],
            "source": [
              "CPE_RANGE",
              "CPE_STRING"
            ]
          },
          "events": [
            {
              "introduced": "3c78e95e36268dfb76db1570f0cf49104fa6eabc"
            },
            {
              "fixed": "d2c7dce5e94d6d1d81ad7d66402140b1c1962a53"
            },
            {
              "introduced": "e9d17cddc285615807ec5fef09240777436b25dc"
            },
            {
              "fixed": "f3d5786aa1bd6c2a78d666afc89b2a4570f66593"
            },
            {
              "introduced": "56e547d387ab49f688c93fe9ca082b1b5d94deed"
            },
            {
              "fixed": "1c65de6f27a3bac481514e56e3637785b65a4f2c"
            },
            {
              "introduced": "24566c02fb917a6ca1b6479a60971b0d8acd895c"
            }
          ],
          "repo": "https://github.com/apache/tomcat",
          "type": "GIT"
        }
      ],
      "versions": [
        "9.0.0-milestone23",
        "9.0.0-milestone24",
        "9.0.0-milestone25",
        "9.0.0-milestone26",
        "9.0.0-milestone27"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "apache",
    "cwe_ids": [
      "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25854.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "11.0.0-M1"
          },
          {
            "last_affected": "11.0.18"
          },
          {
            "introduced": "10.1.0-M1"
          },
          {
            "last_affected": "10.1.52"
          },
          {
            "introduced": "9.0.0.M23"
          },
          {
            "last_affected": "9.0.115"
          },
          {
            "introduced": "8.5.30"
          },
          {
            "last_affected": "8.5.100"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "11.0.0-M1"
          },
          {
            "fixed": "11.0.18"
          },
          {
            "introduced": "10.1.0-M1"
          },
          {
            "fixed": "10.1.52"
          },
          {
            "introduced": "9.0.0.M23"
          },
          {
            "fixed": "9.0.115"
          },
          {
            "introduced": "8.5.30"
          },
          {
            "fixed": "8.5.100"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100.\nOther, unsupported versions may also be affected\n\nUsers are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.",
  "id": "CVE-2026-25854",
  "modified": "2026-07-08T05:36:22.106290500Z",
  "published": "2026-04-09T19:13:13.529Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/09/21"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25854.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread/ghct3b6o74bp2vm7q875s1zh0dqrz3h0"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25854"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Tomcat: Occasionally open redirect"
}