GHSA-r7rc-c989-86g6

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

At a glance

Published
Updated
CVE
CVE-2026-9705
Aliases
BIT-keycloak-2026-9705
CVSS_V3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

### 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.

Affected packages

PackageVersions
Maven · org.keycloak:keycloak-servicesintroduced 0, fixed 26.6.4

References

Sources

SourceLicence
OSV.devCC-BY 4.0 — GitHub Advisory Database