{"id":"CVE-2023-41889","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-41889","generatedAt":"2026-10-28T02:10:27.204Z","title":"Prior to version 1.18.0, SHIRASAGI is vulnerable to a Post-Unicode normalization issue.","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.\n","published":"2023-09-15T21:15:12.000Z","lastModified":"2026-06-17T06:23:01.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},"cwe":["CWE-176","CWE-116"],"affected":["ss-proj/shirasagi"],"epss":{"score":0.00706,"percentile":0.53099,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.71%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72","tags":["Product"],"source":"security-advisories@github.com"},{"url":"https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r","tags":["Exploit","Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks","tags":["Exploit","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72","tags":["Product"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r","tags":["Exploit","Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-41889","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}