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CVE-2026-8830GHSA-G8VR-X4QH-25QG

Keycloak: org.keycloak/keycloak-services: keycloak: policy bypass during webauthn credential registration via client-side javascript manipulation

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 26.6.3
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that the newly created credential's parameters, such as public key algorithms, match the realm's configured WebAuthn policies. This could lead to the creation of credentials that do not adhere to administrative security requirements, potentially weakening the overall security posture of the system by allowing non-compliant authentication methods.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • rhbk/keycloak-operator-bundle

    Version range not reported

  • rhbk/keycloak-rhel9

    Version range not reported

  • rhbk/keycloak-rhel9-operator

    Version range not reported

  • rhbk/keycloak-rhel9-operator

    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

  • rhbk/keycloak-rhel9-operator

    Version range not reported

  • org.keycloak:keycloak-servicesMaven

    fixed in 26.6.3

References 6

access.redhat.com

bugzilla.redhat.com