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{"acknowledgement": "Red Hat would like to thank Paul Bottinelli of Trail of Bits in collaboration with OpenAI for reporting this issue.", "bugzilla": {"description": "keycloak-services: keycloak-services: Name-only group claims let same-name groups satisfy path-specific group policies", "id": "2514530", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2514530"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-285", "details": ["A flaw was found in the group policy provider of Keycloak authorization services, which is used to manage fine-grained access control to resources. The issue occurs when the system evaluates group-based policies using tokens that only contain group names rather than full paths. If two groups in different parts of the organization share the same name, a user in the unauthorized group can be mistaken for a member of the authorized group. This can allow a user to gain unauthorized access to protected resources they should not be able to reach."], "mitigation": {"lang": "en:us", "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."}, "name": "CVE-2026-19608", "package_state": [{"cpe": "cpe:/a:redhat:build_keycloak:", "fix_state": "Affected", "package_name": "keycloak-services", "product_name": "Red Hat Build of Keycloak"}, {"cpe": "cpe:/a:redhat:build_keycloak:", "fix_state": "Affected", "package_name": "rhbk-openshift-rhel9/rhbk-openshift-rhel9", "product_name": "Red Hat Build of Keycloak"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Not affected", "package_name": "keycloak-services", "product_name": "Red Hat Single Sign-On 7"}], "public_date": "2026-08-11T20:28:49Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-19608\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-19608"], "statement": "The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate, given that exploitation requires a specific configuration where OIDC group mappers emit name-only claims and a group name collision exists across different paths. Successful exploitation allows an attacker to gain unauthorized access to protected resources by satisfying a group-based policy they are not intended to meet. The vulnerability's root cause is the group policy provider's fallback to matching bare group names when full path information is missing from the token claims.", "threat_severity": "Moderate"}

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