Description (CNA)
A flaw was found in Keycloak's SAML brokering functionality. When Keycloak is configured as a client in a Security Assertion Markup Language (SAML) setup, it fails to validate the `NotOnOrAfter` timestamp within the `SubjectConfirmationData`. This allows an attacker to delay the expiration of SAML responses, potentially extending the time a response is considered valid and leading to unexpected session durations or resource consumption.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4.10-1 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-12 before * |
| Red Hat / Red Hat build of Keycloak 26.4 | unaffected 26.4-12 before * |
| Red Hat / Red Hat build of Keycloak 26.4.10 | unaffected |
| Red Hat / Red Hat JBoss Enterprise Application Platform 8 | affected |
| Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack | affected |
| Red Hat / Red Hat Single Sign-On 7 | affected |
CWE
CWE-112
References
- https://access.redhat.com/errata/RHSA-2026:3947
- https://access.redhat.com/errata/RHSA-2026:3948
- https://access.redhat.com/security/cve/CVE-2026-1190
- https://bugzilla.redhat.com/show_bug.cgi?id=2430835
ADP enrichment
No English description supplied.
No references supplied.