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GHSA-r7rc-c989-86g6

Keycloak: Attacker can re-enable and take over disabled clients via registration access token

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-9705

Packages

EcosystemPackageAffectedFixed in
Maven org.keycloak:keycloak-services < 26.6.4 26.6.4

Details

As written in the advisory (Markdown source, shown as plain text).

### Description A flaw was found in Keycloak's client registration service. A remote attacker, possessing a previously issued Registration Access Token (RAT), could exploit this vulnerability to re-enable a client that an administrator had explicitly disabled. This bypasses security controls, allowing the attacker to reset the client's secret and potentially regain privileged API access. The primary impact includes unauthorized information disclosure and potential integrity compromise.

References

External links from the advisory. They lead to third-party sites.