CVE-2026-1190
Fixed in a distro release EPSS <1%CVSS 3.1
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.
Products: Red Hat build of Keycloak 26.4, Red Hat build of Keycloak 26.4.10, Red Hat JBoss Enterprise Application Platform 8, Red Hat JBoss Enterprise Application Platform Expansion Pack, Red Hat Single Sign-On 7
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Maven | org.keycloak:keycloak-services | no fix |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | keycloak-26.3-iamguarded-compat | no fix |
| Chainguard | keycloak-26.4 | no fix |
| Chainguard | keycloak-26.4-iamguarded-compat | no fix |
| Chainguard | keycloak-26.5 | 26.5.3-r0 |
| Chainguard | keycloak-26.5-iamguarded-compat | 26.5.3-r0 |
| Chainguard | keycloak-fips-26.3-iamguarded-fips | no fix |
| Chainguard | keycloak-fips-26.4 | no fix |
| Chainguard | keycloak-fips-26.4-iamguarded-fips | no fix |
| Chainguard | keycloak-fips-26.5 | 26.5.3-r0 |
| Chainguard | keycloak-fips-26.5-iamguarded-fips | 26.5.3-r0 |
| Chainguard | request-9047-keycloak-fips-26.4 | no fix |
| Chainguard | request-9047-keycloak-fips-26.4-iamguarded-fips | no fix |
| Wolfi | keycloak-26.4 | no fix |
| Wolfi | keycloak-26.4-iamguarded-compat | no fix |
| Wolfi | keycloak-26.5 | 26.5.3-r0 |
| Wolfi | keycloak-26.5-iamguarded-compat | 26.5.3-r0 |