{"id":"CVE-2023-51774","details":"The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode.","aliases":["GHSA-c8v6-786g-vjx6"],"modified":"2026-08-12T03:51:28.402350801Z","published":"2023-12-25T00:00:00Z","related":["CGA-w757-c63c-vh7m","openSUSE-SU-2025:0004-1"],"database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/51xxx/CVE-2023-51774.json"},"references":[{"type":"WEB","url":"https://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.md"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/51xxx/CVE-2023-51774.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51774"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nov/json-jwt","events":[{"introduced":"413848c8c93a99093cbb68f198004848f62ecdbd"},{"last_affected":"413848c8c93a99093cbb68f198004848f62ecdbd"}],"database_specific":{"cpe":"cpe:2.3:a:json-jwt_project:json-jwt:1.16.3:*:*:*:*:ruby:*:*","extracted_events":[{"introduced":"1.16.3"},{"last_affected":"1.16.3"}],"source":"CPE_STRING"}}],"versions":["1.16.3","v1.16.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-51774.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}