Org.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusion
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 26.6.4 | unaffected | — | ||||||
| Red Hat | Red Hat Build of Keycloak | affected | — | ||||||
| Red Hat | Red Hat Build of Keycloak | 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 | ||||||||
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| Redhat | Build Of Keycloak |
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| Redhat | Data Grid |
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| Redhat | Jboss Enterprise Application Platform Expansion Pack |
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| Redhat | Red Hat Single Sign On |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-j97h-3f8r-mrjr | Keycloak has authentication bypass via jwt algorithm confusion |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.263% probability within 30 days)
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat build Of Keycloak
Redhat data Grid Redhat jboss Enterprise Application Platform Expansion Pack |
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| Vendors & Products |
Redhat build Of Keycloak
Redhat data Grid Redhat jboss Enterprise Application Platform Expansion Pack |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to impersonate any federated user linked to the affected Identity Provider, leading to unauthorized access and potential privilege escalation. | |
| Title | Org.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusion | |
| First Time appeared |
Redhat
Redhat build Keycloak Redhat jboss Data Grid Redhat jbosseapxp Redhat red Hat Single Sign On |
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| Weaknesses | CWE-347 | |
| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:build_keycloak:26.6::el9 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
Redhat build Keycloak Redhat jboss Data Grid Redhat jbosseapxp Redhat red Hat Single Sign On |
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| References |
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| Metrics |
cvssV3_1
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