Keycloak: keycloak: brute-force protection bypass in ciba flow
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 | affected |
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| Red Hat | Red Hat build of Keycloak 26.4 | affected |
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| Red Hat | Red Hat build of Keycloak 26.4 | affected |
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| Red Hat | Red Hat build of Keycloak 26.4.14 | unaffected | — | ||||||
| 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 26.6.5 | unaffected | — |
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Redhat | Build Of Keycloak |
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Vendor Workaround
To mitigate this issue, ensure that Client-Initiated Backchannel Authentication (CIBA) is not enabled in Keycloak realms unless explicitly required. If CIBA is enabled, consider disabling it to prevent the bypass of brute-force protection mechanisms. Consult Keycloak documentation for instructions on managing CIBA configuration.
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-q6h7-xxp7-7429 | Keycloak has an Authentication Bypass by Primary Weakness |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.375% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:build_keycloak:26.4::el9 cpe:/a:redhat:build_keycloak:26.6::el9 |
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| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat build Of Keycloak
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| Vendors & Products |
Redhat build Of Keycloak
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts. | |
| Title | Keycloak: keycloak: brute-force protection bypass in ciba flow | |
| First Time appeared |
Redhat
Redhat build Keycloak |
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| Weaknesses | CWE-305 | |
| CPEs | cpe:/a:redhat:build_keycloak: | |
| Vendors & Products |
Redhat
Redhat build Keycloak |
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| References |
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| Metrics |
cvssV3_1
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