{"id":"CVE-2026-19194","summary":"CAP JWT claims validation bypass using non-canonical claim names","details":"The HashiCorp cap JWT validation library before version 0.14.0 is vulnerable to a claims validation bypass that may cause downstream applications to make authorization decisions using claim values different from those validated. Exploitation requires attacker-controlled claims in a JWT signed by a key trusted by the application. This vulnerability (CVE-2026-19194) is fixed in cap 0.14.0.","modified":"2026-11-14T10:45:38.486370733Z","published":"2026-11-13T21:17:56.457Z","database_specific":{"cwe_ids":["CWE-178"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19194.json","cna_assigner":"HashiCorp"},"references":[{"type":"WEB","url":"https://discuss.hashicorp.com/t/hcsec-2026-60-cap-jwt-claims-validation-bypass-using-non-canonical-claim-names/78258"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19194.json"},{"type":"PACKAGE","url":"https://github.com/hashicorp/cap"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19194"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hashicorp/cap","events":[{"introduced":"0"},{"fixed":"52edefb7b9aa3996b6afb8877e8d624f6295372c"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"0"},{"fixed":"0.14.0"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]}}],"versions":["v0.13.0","v0.12.0","v0.11.0","v0.10.0","v0.9.1","v0.9.0","v0.8.0","v0.7.0","v0.6.0","v0.5.0","v0.4.1","v0.4.0","v0.3.4","v0.3.3","v0.3.2","v0.3.1","v0.3.0","v0.2.0","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-19194.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N"}]}