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Medium6.5Red Hat Linux

Medium [CVE-2026-9705] Attacker can re-enable and take over disabled clients via Registration Access Token

This medium-severity Red Hat Linux advisory covers CVE-2026-9705.

CVE-2026-9705 Published Jun 25, 2026Updated by vendor Jun 25, 2026
CVE-2026-9705
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Attacker can re-enable and take over disabled clients via Registration Access Token. Red Hat rates this moderate (CVSS 6.5).

Weakness: CWE-613. Red Hat lists fixing advisory RHSA-2026:30049 with package rhbk/keycloak-operator-bundle:26.4.13-1, rhbk/keycloak-rhel9-operator:26.4-19, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9:26.6-8.

Affected versions
  • rhbk/keycloak-operator-bundle:26.4.13-1
  • rhbk/keycloak-rhel9-operator:26.4-19
  • rhbk/keycloak-rhel9
  • rhbk/keycloak-rhel9:26.6-8
  • rhbk/keycloak-rhel9:26.4-19
  • rhbk/keycloak-operator-bundle:26.6.4-2
  • rhbk/keycloak-rhel9-operator:26.6-8

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • rhbk/keycloak-operator-bundle:26.4.13-1
  • rhbk/keycloak-rhel9-operator:26.4-19
  • rhbk/keycloak-rhel9
  • rhbk/keycloak-rhel9:26.6-8
  • rhbk/keycloak-rhel9:26.4-19
  • rhbk/keycloak-operator-bundle:26.6.4-2
  • rhbk/keycloak-rhel9-operator:26.6-8
  • RHSA-2026:30049

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • To mitigate this issue, restrict network access to the Keycloak Dynamic Client Registration endpoint. Configure network firewalls to allow connections only from trusted hosts or networks that legitimately require access to this functionality. This limits the exposure of the vulnerable endpoint to unauthorized access attempts.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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