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{"bugzilla": {"description": "oauthlib: oauthlib: Authentication bypass via missing device code validation", "id": "2567703", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567703"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N", "status": "draft"}, "cwe": "CWE-303", "details": ["A flaw was found in OAuthLib. This vulnerability allows a remote attacker to bypass authentication and obtain unauthorized access tokens during the device authorization workflow. By submitting a token request with a valid client identifier alongside an invalid or missing device authorization code, the attacker can receive a valid bearer token without completing user approval, leading to unauthorized access to protected resources."], "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-2026-49272", "package_state": [{"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Not affected", "package_name": "rhoai/odh-mlflow-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}], "public_date": "2026-11-05T20:58:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-49272\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-49272\nhttps://github.com/oauthlib/oauthlib/commit/77a5f1c8ce00da2b0b8c5f6e9cc129920085f114\nhttps://github.com/oauthlib/oauthlib/pull/954\nhttps://github.com/oauthlib/oauthlib/releases/tag/v4.0.1\nhttps://github.com/oauthlib/oauthlib/security/advisories/GHSA-3jp2-3mrg-2vxc"], "statement": "This vulnerability is rated as Important because a remote attacker with knowledge of a registered client identifier can bypass authentication mechanisms to acquire valid bearer tokens. Exploitation requires the authorization server to support and actively expose the RFC 8628 device authorization grant workflow. Deployments where the device authorization flow is not implemented or enabled are not susceptible to this flaw.", "threat_severity": "Important"}