{"id":"CVE-2026-105302","published":"2026-10-05T06:16:58.383","lastModified":"2026-10-06T15:09:20.387","description":"A flaw was found in the User Session Note mapper of the Keycloak identity and access management solution. The issue occurs because the mapper does not validate whether a requested session note contains sensitive internal credentials, such as federated access tokens from external identity providers. This allows a delegated client administrator to leak a user's upstream bearer tokens into the tokens issued to their managed application, potentially leading to unauthorized access to the user's data on external platforms.","cvssScore":5.7,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","cwes":["CWE-200"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-105302","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545800","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}