CVE-2026-19625

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.1:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.5:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.1:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.3:*:*:*:*:*:*:*"], "product": "Enterprise Build of Quarkus", "vendor": "IBM", "versions": [{"lessThanOrEqual": "3.27.5", "status": "affected", "version": "3.27.1", "versionType": "semver"}, {"lessThanOrEqual": "3.33.3", "status": "affected", "version": "3.33.1", "versionType": "semver"}]}], "source": "psirt@us.ibm.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "When a Quarkus application has multiple endpoints secured by individual OIDC provider tenants, such as \"/oidc-provider1\" that is secured by the OIDC Provider 1 and \"/oidc-provider2\" that is secured by the OIDC Provider 2, and an optional token introspection cache is also enabled, then a valid token issued by the OIDC Provider 1 that can be used to access \"/oidc-provider1\" can also be used to access \"/oidc-provider2\" that is secured by another OIDC Provider 2."}], "id": "CVE-2026-19625", "lastModified": "2026-09-10T16:17:09.417", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "psirt@us.ibm.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-19625", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-09T19:16:31.069809Z", "version": "2.0.3"}}]}, "published": "2026-09-08T21:17:05.717", "references": [{"source": "psirt@us.ibm.com", "url": "https://www.ibm.com/support/pages/node/7286498"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "psirt@us.ibm.com", "type": "Secondary"}]}

{"bugzilla": {"description": "quarkus-oidc: Quarkus OIDC: Cross-tenant authentication bypass via shared token-introspection cache", "id": "2517693", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517693"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-524", "details": ["A flaw was found in Quarkus OIDC. A shared token-introspection cache can be exploited by a remote attacker to bypass authentication across different tenants. This allows unauthorized access to resources or data, leading to a cross-tenant authentication bypass."], "name": "CVE-2026-19625", "package_state": [{"cpe": "cpe:/a:redhat:exploit_intelligence:0", "fix_state": "Affected", "package_name": "exploit-intelligence-tech-preview/agent-client-rhel9", "product_name": "Exploit Intelligence"}, {"cpe": "cpe:/a:redhat:apicurio_registry:3", "fix_state": "Affected", "package_name": "quarkus-oidc", "product_name": "Red Hat build of Apicurio Registry 3"}, {"cpe": "cpe:/a:redhat:quarkus:3", "fix_state": "Affected", "package_name": "quarkus-oidc", "product_name": "Red Hat build of Quarkus"}], "public_date": "2026-08-31T11:55:20Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-19625\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-19625"], "statement": "Important: This flaw in Quarkus OIDC allows for cross-tenant authentication bypass due to a shared token-introspection cache. In multi-tenant deployments of Red Hat products utilizing Quarkus OIDC, an attacker could potentially gain unauthorized access to other tenants' resources by exploiting this shared cache mechanism.", "threat_severity": "Important"}

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