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        "state": "PUBLISHED",
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        "dateReserved": "2026-09-19T13:55:40.709Z",
        "datePublished": "2026-11-05T17:15:33.414Z",
        "dateUpdated": "2026-11-05T17:15:33.414Z"
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    "containers": {
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            "title": "Keycloak-core: keycloak-core: saml adapter does not bind signed assertions to the configured identity provider issuer",
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                            "value": "Important",
                            "namespace": "https://access.redhat.com/security/updates/classification/"
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                        "type": "Red Hat severity rating"
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                },
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.4,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                        "version": "3.1"
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            "descriptions": [
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                    "lang": "en",
                    "value": "A flaw was found in the SAML adapter component of Keycloak, which is used to secure applications with SAML-based authentication. The adapter fails to verify that the issuer of a signed SAML assertion matches the expected identity provider configured for the application. If multiple identity providers share the same trusted signing key, an attacker who controls one of those providers can create a validly signed assertion to log into the application as any user, potentially gaining full administrative control."
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                    "packageName": "keycloak-core",
                    "defaultStatus": "unaffected",
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                    "packageName": "jboss-eap-7/eap74-els-openjdk11-openshift-rhel8",
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                    "packageName": "keycloak-core",
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                    "packageName": "candlepin",
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            "datePublic": "2026-11-05T00:00:00.000Z",
            "problemTypes": [
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                            "cweId": "CWE-347",
                            "description": "Improper Verification of Cryptographic Signature",
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                            "type": "CWE"
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            "workarounds": [
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                    "value": "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."
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            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-09-18T14:55:12.000Z",
                    "value": "Reported to Red Hat."
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                    "lang": "en",
                    "time": "2026-11-05T00:00:00.000Z",
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            "credits": [
                {
                    "lang": "en",
                    "value": "Red Hat would like to thank SECTION: Create Trackers yes for reporting this issue."
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