Keycloak: keycloak: attacker can re-enable and take over disabled clients via registration access token
Priority LOW 35CWE-613Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-613.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00464 40th percentileScored 2026-11-07
Fix Fixed org.keycloak:keycloak-services (Maven): 26.6.4Red Hat: 4 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | — | 26.4.13-1 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.4 | — | 26.4-19 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.4 | — | 26.4-19 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.4.13 | — | — | Not affected | CNA |
| Red Hat | Red Hat build of Keycloak 26.6 | — | 26.6.4-2 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.6 | — | 26.6-8 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.6 | — | 26.6-8 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.6.4 | — | — | Not affected | CNA |
| — | org.keycloak:keycloak-services (Maven) | before 26.6.4 | 26.6.4 | Patch available | GHSA-r7rc-c989-86g6 |
- Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4.13-1 Patch available CNA
- Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4-19 Patch available CNA
- Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4-19 Patch available CNA
- Red Hat build of Keycloak 26.4.13 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6.4-2 Patch available CNA
- Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6-8 Patch available CNA
- Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6-8 Patch available CNA
- Red Hat build of Keycloak 26.6.4 VendorRed Hat Affected — Fixed in — Not affected CNA
- org.keycloak:keycloak-services (Maven) Vendor— Affected before 26.6.4 Fixed in 26.6.4 Patch available GHSA-r7rc-c989-86g6
Remediation
- Fix · GHSA-r7rc-c989-86g6 org.keycloak:keycloak-services (Maven) Fixed in 26.6.4 Advisory →
Red Hat 4 advisories
- RHSA-2026:30084 Released 2026-06-25 · Red Hat rating ImportantRed Hat build of Keycloak 26.6.4 Images Security Update
- Red Hat build of Keycloak 26.6 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
- RHSA-2026:30083 Released 2026-06-25 · Red Hat rating ImportantRed Hat build of Keycloak 26.6.4 Security Update
- Red Hat build of Keycloak 26.6.4
- RHSA-2026:30050 Released 2026-06-25 · Red Hat rating ImportantRed Hat build of Keycloak 26.4.13 Images Security Update
- Red Hat build of Keycloak 26.4 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
Show 1 more Red Hat advisories
- RHSA-2026:30049 Released 2026-06-25 · Red Hat rating ImportantRed Hat build of Keycloak 26.4.13 Security Update
- Red Hat build of Keycloak 26.4.13
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat build of Keycloak 26.4 | Fixed | RHSA-2026:30050 |
| Red Hat build of Keycloak 26.4.13 | Fixed | RHSA-2026:30049 |
| Red Hat build of Keycloak 26.6 | Fixed | RHSA-2026:30084 |
| Red Hat build of Keycloak 26.6.4 | Fixed | RHSA-2026:30083 |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-9705
- 2026-10-03 Alias added: GHSA-q929-g23j-2rc7
- 2026-10-29 Alias added: GHSA-r7rc-c989-86g6
- 2026-10-29 Fix available: Maven/org.keycloak:[email protected] · GHSA-r7rc-c989-86g6
- 2026-10-29 CVSS score added · GHSA-r7rc-c989-86g6
- 2026-10-29 Weakness changed · GHSA-r7rc-c989-86g6
- 2026-10-29 9 new references · GHSA-r7rc-c989-86g6
References
More Red Hat Build Of Keycloak vulnerabilities
- TI-2026-02223 Keycloak: keycloak: unauthorized authentication via disabled saml identity provider CVSS 3.1HIGH 8.1
- TI-2024-01049 Keycloak: path transversal in redirection validation CVSS 3.1HIGH 8.1
- TI-2026-13740 Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction CVSS 3.1CRITICAL 9.8
- TI-2026-13741 Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation CVSS 3.1CRITICAL 9.1
- TI-2026-13106 Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation CVSS 3.1HIGH 8.8
- TI-2026-02631 Authentication bypass in Red Hat build of Keycloak 26.2 CVSS 3.1HIGH 8.8
Sources
- CVE-2026-9705 · CVE Program
- CVE-2026-9705 · NVD
- FIRST EPSS
- GHSA-q929-g23j-2rc7 · GitHub Advisory Database · CC BY 4.0
- GHSA-r7rc-c989-86g6 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-9705 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences