Keycloak: keycloak: information disclosure due to redirect_uri validation bypass
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 26.2 | affected |
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| Red Hat | Red Hat build of Keycloak 26.2 | affected |
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| Red Hat | Red Hat build of Keycloak 26.2 | affected |
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| Red Hat | Red Hat build of Keycloak 26.2.15 | unaffected | — | ||||||
| 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 26.4.11 | unaffected | — |
Configuration 1 [-]
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| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat build of Keycloak 26.2 | |||
| rhbk/keycloak-operator-bundle:26.2.15-1 | cpe:/a:redhat:build_keycloak:26.2::el9 | RHSA-2026:6476 | 2026-04-02T00:00:00Z |
| rhbk/keycloak-rhel9:26.2-18 | cpe:/a:redhat:build_keycloak:26.2::el9 | RHSA-2026:6476 | 2026-04-02T00:00:00Z |
| rhbk/keycloak-rhel9-operator:26.2-18 | cpe:/a:redhat:build_keycloak:26.2::el9 | RHSA-2026:6476 | 2026-04-02T00:00:00Z |
| Red Hat build of Keycloak 26.2.15 | |||
| rhbk/keycloak-rhel9 | cpe:/a:redhat:build_keycloak:26.2::el9 | RHSA-2026:6475 | 2026-04-02T00:00:00Z |
| Red Hat build of Keycloak 26.4 | |||
| rhbk/keycloak-operator-bundle:26.4.11-1 | cpe:/a:redhat:build_keycloak:26.4::el9 | RHSA-2026:6478 | 2026-04-02T00:00:00Z |
| rhbk/keycloak-rhel9:26.4-14 | cpe:/a:redhat:build_keycloak:26.4::el9 | RHSA-2026:6478 | 2026-04-02T00:00:00Z |
| rhbk/keycloak-rhel9-operator:26.4-14 | cpe:/a:redhat:build_keycloak:26.4::el9 | RHSA-2026:6478 | 2026-04-02T00:00:00Z |
| Red Hat build of Keycloak 26.4.11 | |||
| rhbk/keycloak-rhel9 | cpe:/a:redhat:build_keycloak:26.4::el9 | RHSA-2026:6477 | 2026-04-02T00:00:00Z |
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Redhat | Build Of Keycloak |
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Vendor Workaround
To mitigate this vulnerability, avoid using wildcards in `redirect_uri` configurations within Keycloak. Restricting `redirect_uri` to explicit, fully qualified URIs prevents the bypass of validation logic. This configuration change may require a service restart or reload to take effect.
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-cjm2-j6cm-6p6m | Keycloak: Redirect URI validation bypass via ..;/ path traversal in OIDC auth endpoint |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.448% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:* cpe:2.3:a:redhat:build_of_keycloak:26.2.15:*:*:*:text-only:*:*:* cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:text-only:*:*:* cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:text-only:*:*:* cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:text-only:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| 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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| CPEs | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Vendors & Products |
Redhat build Of Keycloak
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| References |
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| References |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (URIs) that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information disclosure. | |
| Title | Keycloak: keycloak: information disclosure due to redirect_uri validation bypass | |
| First Time appeared |
Redhat
Redhat build Keycloak |
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| Weaknesses | CWE-601 | |
| CPEs | cpe:/a:redhat:build_keycloak: | |
| Vendors & Products |
Redhat
Redhat build Keycloak |
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| References |
| |
| Metrics |
cvssV3_1
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