Keycloak-services: keycloak-services: authorization codes can be retargeted to another client session
Priority LOW 26CWE-472Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-384.
Summary
A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their own client, potentially allowing them to obtain access tokens for a victim's identity.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00295 22nd percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- 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 26.6 | — | 26.6.7-3 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.6 | — | 26.6-20 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.6 | — | 26.6-20 | Patch available | CNA |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — | — | Not affected | CNA |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — | — | Not affected | CNA |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — | — | Not affected | CNA |
| Red Hat | Red Hat Data Grid 8 | — | — | Not affected | CNA |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | — | — | Not affected | CNA |
| Red Hat | Red Hat Single Sign-On 7 | — | — | Not affected | CNA |
- Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6.7-3 Patch available CNA
- Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6-20 Patch available CNA
- Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6-20 Patch available CNA
- Red Hat build of Keycloak 26.6.7 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat build of Keycloak 26.6.7 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat build of Keycloak 26.6.7 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Data Grid 8 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat JBoss Enterprise Application Platform Expansion Pack VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Single Sign-On 7 VendorRed Hat Affected — Fixed in — Not affected CNA
Remediation
Red Hat 2 advisories
- RHSA-2026:68277 Released 2026-09-16 · Red Hat rating ImportantRed Hat build of Keycloak 26.6.7 Images Security Update
- Red Hat build of Keycloak 26.6 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
- RHSA-2026:68278 Released 2026-09-16 · Red Hat rating ImportantRed Hat build of Keycloak 26.6.7 Security Update
- Red Hat build of Keycloak 26.6.7
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 26.6 | Fixed | RHSA-2026:68277 |
| Red Hat build of Keycloak 26.6.7 | Fixed | RHSA-2026:68278 |
Not affected: 3 products
- Red Hat Data Grid 8
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat Single Sign-On 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16089
- 2026-10-03 Alias added: GHSA-63wm-fvw8-h2hp
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-2026-16089 · CVE Program
- CVE-2026-16089 · NVD
- FIRST EPSS
- GHSA-63wm-fvw8-h2hp · GitHub Advisory Database · CC BY 4.0
- CVE-2026-16089 · 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