In short
- CVE-2026-1190 is a LOW (CVSS 3.1) vulnerability affecting org.keycloak:keycloak-services.
- Chance of exploitation in the next 30 days (EPSS): 0.41%, higher than 35.9% of all vulnerabilities.
- No patched version is listed yet: follow the vendor's advisory in References.
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.
NVD 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.
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