3.1
Low
CVE-2026-1190 A flaw was found in Keycloak's SAML brokering functionality
Description
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Build of Keycloak | Versions not published | |
| Red Hat JBoss Enterprise Application Platform 8 | Versions not published | |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Versions not published | |
| Red Hat Single Sign-On 7 | Versions not published | |
| Red Hat build of Keycloak 26.4 26.4 | earliest → < 26.4-12 | 26.4-12 |
| Red Hat build of Keycloak 26.4.10 | Versions not published |
References
- RHSA-2026:3947 access.redhat.com
- RHSA-2026:3948 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2430835 bugzilla.redhat.com
Timeline
- Published
- Last modified
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