{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23903","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-01-19T01:14:40.103Z","datePublished":"2026-02-09T09:26:21.772Z","dateUpdated":"2026-02-09T16:17:43.204Z"},"containers":{"cna":{"affected":[{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"org.apache.shiro:shiro-web","product":"Apache Shiro","vendor":"Apache Software Foundation","versions":[{"lessThan":"2.0.7","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Jesse Yang"},{"lang":"en","type":"remediation developer","value":"Lenny Pimak"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","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."}],"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."}],"metrics":[{"other":{"content":{"text":"low"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-289","description":"CWE-289 Authentication Bypass by Alternate Name","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-02-09T09:26:21.772Z"},"references":[{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/5jjf0hnjcol58z2m5y255c7scz1lnp8k"}],"source":{"discovery":"EXTERNAL"},"title":"Apache Shiro: Auth bypass when accessing static files only on case-insensitive filesystems","x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/02/08/1"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-02-09T10:25:43.212Z"}},{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-02-09T16:17:20.608697Z","id":"CVE-2026-23903","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-09T16:17:43.204Z"}}]}}