# CVE-2026-1190

## Summary

- **CVE ID:** CVE-2026-1190
- **Severity:** LOW
- **CVSS Score:** 3.1 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N)
- **CWE:** CWE-112
- **Published:** Jan 26, 2026
- **Last Modified:** Mar 12, 2026

## 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

- Red Hat — Red Hat build of Keycloak 26.4 (26.4.10-1)
- Red Hat — Red Hat build of Keycloak 26.4 (26.4-12)

## References

- [CNA](https://access.redhat.com/errata/RHSA-2026:3947)
- [CNA](https://access.redhat.com/errata/RHSA-2026:3948)
- [CNA](https://access.redhat.com/security/cve/CVE-2026-1190)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2430835)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.38%
- **EPSS Percentile:** 30.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._