CVE-2026-97176
A flaw was found in the Level of Authentication enforcement mechanism of Keycloak, an identity and access management solution. The issue occurs when a client specifically requires a higher security level for a user who already has an active session at a lower level. Due to a logic error in how session re-evaluations are handled, Keycloak may incorrectly issue a token at the lower security level instead of enforcing the required higher level, potentially allowing unauthorized access to sensitive resources that rely on these security claims.
Published:Sep 23, 2026
Last Modified:Sep 28, 2026
EPS:Sep 24, 2026
EPSS Score:0.00167
CVSS Score:4.2
Affected Products
Vendor
Product
Action
Vendor
Redhat
Product
Build Keycloak
Redhat
Build Keycloak
Vendor
Redhat
Product
Red Hat Single Sign On
Redhat
Red Hat Single Sign On
Vendor
Redhat
Product
Single Sign-on
Redhat
Single Sign-on
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
