Vulnerabilities in pkg:maven/org.apache.shiro/shiro-spring

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-c244-p6m5-vqj6",
  "modified" : "2026-02-11T19:48:43Z",
  "published" : "2026-02-09T12:30:22Z",
  "aliases" : [ "CVE-2026-23903" ],
  "summary" : "Apache Shiro has an Authentication Bypass",
  "details" : "### Impact\n\n**Authentication Bypass:**\nA vulnerability exists in Apache Shiro that allows authentication bypass for static files when served from a case-insensitive filesystem (such as the default configuration on macOS or Windows).\n\nThe issue arises when Shiro's URL filters are configured with lower-case rules (a common default), but the underlying operating system treats mixed-case filenames as identical. An attacker can access protected static resources by varying the capitalization of the filename in the request (e.g., requesting `/SECRET.TXT` to bypass a rule for `/secret.txt`).\n\nThis issue specifically affects static file handling and does not impact dynamic resource paths that are case-sensitive.\n\n### Patches\nUsers should upgrade to Apache Shiro **2.1.0** or later.\n\n**Important Configuration Note:**\nVersion 2.1.0 introduces a new configuration parameter to handle case-insensitivity, which must be enabled manually to resolve the issue:\n\n* **shiro.ini:**\n    ```ini\n    filterChainResolver.caseInsensitive = true\n    ```\n* **Spring Boot (application.properties):**\n    ```properties\n    shiro.caseInsensitive=true\n    ```\n\n*Note: Apache Shiro 3.0.0 (upcoming) will enable this setting by default.*\n\n### Workarounds\n* Ensure that the filesystem hosting the application is case-sensitive (e.g., Linux/Unix).\n* Manually configure all Shiro filter chains to handle all possible case variations of protected filenames (not recommended due to complexity).\n\n### Resources\n* [CVE-2026-23903](https://nvd.nist.gov/vuln/detail/CVE-2026-23903)\n* [Mailing List Announcement](https://lists.apache.org/thread/5jjf0hnjcol58z2m5y255c7scz1lnp8k)\n* [OSS-Security List](http://www.openwall.com/lists/oss-security/2026/02/08/1)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.shiro:shiro-spring"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.1.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.0.6"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-23903"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/shiro/commit/3b9638b957495004599aeaf24ba8949e309f26e8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/shiro"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/5jjf0hnjcol58z2m5y255c7scz1lnp8k"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/02/08/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-289" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-11T19:48:43Z",
    "nvd_published_at" : "2026-02-09T10:15:57Z"
  }
}