Description
A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language (SAML) broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. This allows the attacker to inject an encrypted assertion for an arbitrary principal, leading to unauthorized access and potential information disclosure.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
Low
Affected products
- RedHat / build_of_keycloak26.2 – 26.2.14
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:3925
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:3926
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:3947
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2026:3948
- VENDOR_ADVISORYhttps://access.redhat.com/security/cve/CVE-2026-2092
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=2437296
Updated 8m ago · 8 sources