5.7
Medium
CVE-2026-105302 A flaw was found in the User Session Note mapper of the Keycloak identity and access management solution
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Build of Keycloak | Versions not published | |
| Red Hat Single Sign-On 7 | Versions not published |
References
- access.redhat.com access.redhat.com
- RHBZ#2545800 bugzilla.redhat.com
Timeline
- Published
- Last modified
Other CVEs of Red Hat Build of Keycloak
The 266 CVEs of Red Hat Build of Keycloak →
CVE-2026-97847
Keycloak-services: keycloak-services: client manager can substitute sessionless token principal via hardcoded-claim mappers to obtain realm administrator authority
7.1
High
CVE-2026-97175
Keycloak-services: keycloak-services: unverified idp email auto-linking enables account takeover
8.8
High
CVE-2026-97174
Keycloak-services: keycloak-services: ciba sub parameter injection causes attacker authentication to issue victim tokens
6.8
Medium
CVE-2026-96453
Org.keycloak/keycloak-admin-cli: keycloak-admin-cli: kcadm custom truststore accepts arbitrary self-signed certificates
8.0
High