{
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09"
      },
      "title": "Auth bypass when accessing static files only on case-insensitive filesystems",
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-289 Authentication Bypass by Alternate Name",
              "lang": "en",
              "cweId": "CWE-289",
              "type": "CWE"
            }
          ]
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "affected": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Shiro",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "packageName": "org.apache.shiro:shiro-web",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2.0.7",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "descriptions": [
        {
          "value": "Authentication Bypass by Alternate Name vulnerability in Apache Shiro.\n\nThis issue affects Apache Shiro: before 2.0.7.\n\nUsers are recommended to upgrade to version 2.0.7, which fixes the issue.\n\nThe issue only effects static files. If static files are served from a case-insensitive filesystem,\nsuch as default macOS setup, static files may be accessed by varying the case of the filename in the request.\nIf only lower-case (common default) filters are present in Shiro, they may be bypassed this way.\n\nShiro 2.0.7 and later has a new parameters to remediate this issue\nshiro.ini: filterChainResolver.caseInsensitive = true\napplication.propertie: shiro.caseInsensitive=true\n\nShiro 3.0.0 and later (upcoming) makes this the default.",
          "lang": "en",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "<p>Authentication Bypass by Alternate Name vulnerability in Apache Shiro.</p><p>This issue affects Apache Shiro: before 2.0.7.</p><p>Users are recommended to upgrade to version 2.0.7, which fixes the issue.</p>The issue only effects static files. If static files are served from a case-insensitive filesystem,<br>such as default macOS setup, static files may be accessed by varying the case of the filename in the request.<br>If only lower-case (common default) filters are present in Shiro, they may be bypassed this way.<br><br>Shiro 2.0.7 and later has a new parameters to remediate this issue<br>shiro.ini: <span style=\"background-color: rgba(129, 139, 152, 0.12);\">filterChainResolver.caseInsensitive = true<br></span>application.propertie: shiro<span style=\"background-color: rgba(129, 139, 152, 0.12);\">.caseInsensitive=true<br></span><br>Shiro 3.0.0 and later (upcoming) makes this the default."
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://lists.apache.org/thread/5jjf0hnjcol58z2m5y255c7scz1lnp8k",
          "tags": [
            "vendor-advisory"
          ]
        }
      ],
      "metrics": [
        {
          "other": {
            "type": "Textual description of severity",
            "content": {
              "text": "low"
            }
          }
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jesse Yang",
          "type": "finder"
        },
        {
          "lang": "en",
          "value": "Lenny Pimak",
          "type": "remediation developer"
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "cveId": "CVE-2026-23903",
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "serial": 1,
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}