Keycloak-services: keycloak-services: stateless token preferred_username fallback enables identity rebinding
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| Red Hat | Red Hat build of Keycloak 26.6 | affected |
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| Red Hat | Red Hat build of Keycloak 26.6 | affected |
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| Red Hat | Red Hat build of Keycloak 26.6 | affected |
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| Red Hat | Red Hat build of Keycloak 26.6.8 | unaffected | — | ||||||
| Red Hat | Red Hat build of Keycloak 26.6.8 | unaffected | — | ||||||
| Red Hat | Red Hat Single Sign-On 7 | unaffected | — |
No data.
No data.
No data available yet.
Vendor Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.226% probability within 30 days)
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ssvc
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| References |
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| CPEs | cpe:/a:redhat:build_keycloak:26.6::el9 | |
| References |
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| Title | keycloak-services: keycloak-services: Stateless token preferred_username fallback enables identity rebinding | Keycloak-services: keycloak-services: stateless token preferred_username fallback enables identity rebinding |
| First Time appeared |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
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| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
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| Description | A flaw was found in the TokenManager component of Keycloak, an open-source identity and access management solution. The issue occurs during the validation of stateless access tokens when the original user ID no longer exists. Keycloak incorrectly falls back to using the username to identify the user without verifying if the identity matches the original token subject. This could allow an attacker with an old token to gain access to a newly created service account if it shares the same client ID as a previously deleted one. | |
| Title | keycloak-services: keycloak-services: Stateless token preferred_username fallback enables identity rebinding | |
| Weaknesses | CWE-287 | |
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| Metrics |
threat_severity
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cvssV3_1
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