CVE-2026-110931
A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and access management. The issue occurs when the parser handles a specific element called AuthorityBinding within an authentication statement. Due to an incomplete fix for a previous vulnerability, the parser can enter an infinite loop that consumes all available memory, causing the entire Keycloak service to crash and become unavailable to users.
Published:Nov 5, 2026
Last Modified:Nov 5, 2026
EPS:Nov 5, 2026
EPSS Score:
CVSS Score:7.5
Affected Products
Vendor
Product
Action
Vendor
Red Hat
Product
Red Hat Build Of Keycloak 26.4
Red Hat
Red Hat Build Of Keycloak 26.4
Vendor
Redhat
Product
Build Keycloak
Redhat
Build Keycloak
Vendor
Redhat
Product
Build Of Keycloak
Redhat
Build Of 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)
No CAPEC recorded yet
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
