CVE-2026-105302
A flaw was found in the User Session Note mapper of the Keycloak identity and access management solution. The issue occurs because the mappe
CVSS
5.7
Medium
EPSS
0.2%
p9
KEV
—
Exploit Today
3
0-100
Published: Oct 5, 2026 · Last modified: Oct 6, 2026 · CWE-200
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.