{"api_version":"1","generated_at":"2026-07-23T20:14:36+00:00","cve":"CVE-2023-41889","urls":{"html":"https://cve.report/CVE-2023-41889","api":"https://cve.report/api/cve/CVE-2023-41889.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-41889","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-41889"},"summary":{"title":"CVE-2023-41889","description":"SHIRASAGI is a Content Management System. Prior to version 1.18.0, SHIRASAGI is vulnerable to a Post-Unicode normalization issue. This happens when a logical validation or a security check is performed before a Unicode normalization. The Unicode character equivalent of a character would resurface after the normalization. The fix is initially performing the Unicode normalization and then strip for all whitespaces and then checking for a blank string. This issue has been fixed in version 1.18.0.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-09-15 21:15:00","updated_at":"2023-09-20 19:27:00"},"problem_types":["CWE-116"],"metrics":[],"references":[{"url":"https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72","name":"https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72","refsource":"MISC","tags":[],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r","name":"https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r","refsource":"MISC","tags":[],"title":"Late-Unicode normalization vulnerability in shirasagi/shirasagi · Advisory · shirasagi/shirasagi · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks","name":"https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks","refsource":"MISC","tags":[],"title":"Unicode characters to Bypass Security Checks","mime":"text/html","httpstatus":"403","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-41889","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-41889","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"41889","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"ss-proj","cpe5":"shirasagi","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-41889","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"SHIRASAGI is a Content Management System. Prior to version 1.18.0, SHIRASAGI is vulnerable to a Post-Unicode normalization issue. This happens when a logical validation or a security check is performed before a Unicode normalization. The Unicode character equivalent of a character would resurface after the normalization. The fix is initially performing the Unicode normalization and then strip for all whitespaces and then checking for a blank string. This issue has been fixed in version 1.18.0.\n"}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-176: Improper Handling of Unicode Encoding","cweId":"CWE-176"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"shirasagi","product":{"product_data":[{"product_name":"shirasagi","version":{"version_data":[{"version_affected":"=","version_value":"< 1.18.0"}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r","refsource":"MISC","name":"https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r"},{"url":"https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72","refsource":"MISC","name":"https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72"},{"url":"https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks","refsource":"MISC","name":"https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks"}]},"source":{"advisory":"GHSA-xr45-c2jv-2v9r","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}]}},"nvd":{"publishedDate":"2023-09-15 21:15:00","lastModifiedDate":"2023-09-20 19:27:00","problem_types":["CWE-116"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM"},"exploitabilityScore":3.9,"impactScore":1.4}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:ss-proj:shirasagi:*:*:*:*:*:*:*:*","versionEndExcluding":"1.18.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}