{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-29T16:10:27.466","vulnerabilities":[{"cve":{"id":"CVE-2020-27838","sourceIdentifier":"secalert@redhat.com","published":"2021-03-08T22:15:13.423","lastModified":"2024-11-21T05:21:54.503","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A flaw was found in keycloak in versions prior to 13.0.0. The client registration endpoint allows fetching information about PUBLIC clients (like client secret) without authentication which could be an issue if the same PUBLIC client changed to CONFIDENTIAL later. The highest threat from this vulnerability is to data confidentiality."},{"lang":"es","value":"Se encontró un fallo en keycloak en versiones anteriores a 13.0.0. El endpoint de registro de clientes permite obtener información sobre clientes PÚBLICOS (como el secreto del cliente) sin autenticación, lo que podría ser un problema si el mismo cliente PÚBLICO cambiara a CONFIDENCIAL más adelante. La mayor amenaza de esta vulnerabilidad es la confidencialidad de los datos"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:N/A:N","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-287"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*","versionEndExcluding":"13.0.0","matchCriteriaId":"6C59F338-CA05-4F1D-84DA-246111636A0E"},{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*","matchCriteriaId":"9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890"}]}]}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1906797","source":"secalert@redhat.com","tags":["Issue Tracking","Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1906797","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Vendor Advisory"]}]}}]}