6.5
Medium
Keycloak: Attacker can re-enable and take over disabled clients via registration access token
CVE-2026-9705
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.
Assessment
- CVSS
- 6.5 (v3.1)
- Severity
- Medium
- EPSS
- 0.00464% chance of exploitation in the next 30 days
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 29 October 2026
- Last updated
- 29 October 2026
- Affected
- maven · org.keycloak:keycloak-services
- Weakness
- CWE-613
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
At the source
References
- https://github.com/keycloak/keycloak/security/advisories/GHSA-r7rc-c989-86g6
- https://nvd.nist.gov/vuln/detail/CVE-2026-9705
- https://access.redhat.com/errata/RHSA-2026:30049
- https://access.redhat.com/errata/RHSA-2026:30050
- https://access.redhat.com/errata/RHSA-2026:30083
- https://access.redhat.com/errata/RHSA-2026:30084
- https://access.redhat.com/security/cve/CVE-2026-9705
- https://bugzilla.redhat.com/show_bug.cgi?id=2481878
- https://github.com/advisories/GHSA-r7rc-c989-86g6
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://cve.zerocrew.in/api/cve/CVE-2026-9705