Keycloak-services: keycloak-services: oidc backchannel logout accepts unsigned forged logout tokens
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 build of Keycloak 26.6.8 | unaffected | — | ||||||
| Red Hat | Red Hat Data Grid 8 | unaffected | — | ||||||
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | unaffected | — | ||||||
| Red Hat | Red Hat Single Sign-On 7 | unaffected | — |
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Redhat | Keycloak |
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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% (0.314% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:build_keycloak:26.6::el9 | |
| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Title | keycloak-services: keycloak-services: OIDC backchannel logout accepts unsigned forged logout tokens | Keycloak-services: keycloak-services: oidc backchannel logout accepts unsigned forged logout tokens |
| First Time appeared |
Redhat build Keycloak
Redhat jboss Data Grid Redhat jbosseapxp Redhat red Hat Single Sign On |
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| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:jboss_data_grid:8 cpe:/a:redhat:jbosseapxp cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat build Keycloak
Redhat jboss Data Grid Redhat jbosseapxp Redhat red Hat Single Sign On |
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| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat
Redhat keycloak |
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| Vendors & Products |
Redhat
Redhat keycloak |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in the backchannel logout endpoint of the keycloak-services component, which is part of the Red Hat Build of Keycloak. This component handles authentication and session management for applications. The issue occurs when an OIDC identity provider is configured to skip signature validation. In this specific setup, the system incorrectly accepts logout requests that have no cryptographic signature. An attacker who knows certain technical details about a user's session can use this flaw to force that user to be logged out, potentially disrupting their work. | |
| Title | keycloak-services: keycloak-services: OIDC backchannel logout accepts unsigned forged logout tokens | |
| Weaknesses | CWE-347 | |
| References |
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| Metrics |
threat_severity
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cvssV3_1
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