# CVE-2024-1249

## Summary

- **CVE ID:** CVE-2024-1249
- **Severity:** HIGH
- **CVSS Score:** 7.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H)
- **CWE:** CWE-346
- **Published:** Apr 17, 2024
- **Last Modified:** Sep 8, 2026

## Description

A flaw was found in Keycloak's OIDC component in the "checkLoginIframe," which allows unvalidated cross-origin messages. This flaw allows attackers to coordinate and send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages.

## Affected Products

- Unknown product (21.1.0)
- Unknown product (23.0.0)
- Red Hat — Red Hat build of Keycloak 22 (22.0.10-1)
- Red Hat — Red Hat build of Keycloak 22 (22-13)
- Red Hat — Red Hat build of Keycloak 22 (22-16)
- Red Hat — Red Hat Single Sign-On 7.6 for RHEL 7 (0:18.0.13-1.redhat_00001.1.el7sso)
- Red Hat — Red Hat Single Sign-On 7.6 for RHEL 8 (0:18.0.13-1.redhat_00001.1.el8sso)
- Red Hat — Red Hat Single Sign-On 7.6 for RHEL 9 (0:18.0.13-1.redhat_00001.1.el9sso)
- Red Hat — RHEL-8 based Middleware Containers (7.6-46)
- Red Hat — RHOSS-1.33-RHEL-8 (1.33.0-5)
- Red Hat — RHOSS-1.33-RHEL-8 (1.33.0-3)

## References

- [CNA](https://access.redhat.com/errata/RHSA-2024:1860)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1861)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1862)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1864)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1866)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1867)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1868)
- [CNA](https://access.redhat.com/errata/RHSA-2024:2945)
- [CNA](https://access.redhat.com/errata/RHSA-2024:4057)
- [CNA](https://access.redhat.com/security/cve/CVE-2024-1249)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2262918)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.45%
- **EPSS Percentile:** 38.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._