Org.keycloak/keycloak-services: open redirect when using wildcard valid redirect uris in keycloak
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 26.2 | 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 26.2.16 | 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 26.4.12 | unaffected | — |
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Redhat | Build Of Keycloak |
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Vendor Workaround
To mitigate this vulnerability, Red Hat recommends avoiding the use of wildcard characters in the "Valid Redirect URIs" field for clients within Keycloak. Instead, explicitly list all allowed redirect URIs. Review all client configurations to ensure that wildcards are not used unless absolutely necessary, and if used, ensure that the client application is robust against open redirect vulnerabilities. Changes to client configurations in Keycloak may require a restart or reload of the Keycloak service to take effect, which could impact active user sessions.
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-rp95-xpg9-c2cq | Keycloak: Open redirect when using wildcard valid redirect URIs in Keycloak |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.637% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:* |
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Type | Values Removed | Values Added |
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| CPEs | cpe:/a:redhat:build_keycloak:26.2::el9 cpe:/a:redhat:build_keycloak:26.4::el9 |
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| References |
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| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| First Time appeared |
Redhat build Of Keycloak
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| Vendors & Products |
Redhat build Of Keycloak
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Description | A flaw was found in Keycloak's URL validation logic during redirect operations. By crafting a malicious request, an attacker could bypass validation to redirect users to unauthorized URLs, potentially leading to the exposure of sensitive information within the domain or facilitating further attacks. This vulnerability specifically affects Keycloak clients configured with a wildcard (*) in the "Valid Redirect URIs" field and requires user interaction to be successfully exploited. The issue stems from a discrepancy in how Keycloak and the underlying Java URI implementation handle the user-info component of a URL. If a malicious redirect URL is constructed using multiple @ characters in the user-info section, Java's URI parser fails to extract the user-info, leaving only the raw authority field. Consequently, Keycloak's validation check fails to detect the malformed user-info, falls back to a wildcard comparison, and incorrectly permits the malicious redirect. | |
| Title | Org.keycloak/keycloak-services: open redirect when using wildcard valid redirect uris in keycloak | |
| 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 |
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| Metrics |
cvssV3_1
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