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    "cveMetadata": {
        "cveId": "CVE-2026-59358",
        "assignerOrgId": "dcf2e128-44bd-42ed-91e8-88f912c1401d",
        "state": "PUBLISHED",
        "assignerShortName": "vmware",
        "dateReserved": "2026-07-04T18:14:46.172Z",
        "datePublished": "2026-10-06T06:54:10.861Z",
        "dateUpdated": "2026-10-06T14:34:25.951Z"
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                "dateUpdated": "2026-10-06T06:54:10.861Z"
            },
            "title": "UAA OAuth Token Endpoint Vulnerability allows user access token reuse for client_credentials grant type",
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                    "descriptions": [
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                            "lang": "en",
                            "cweId": "CWE-287",
                            "description": "CWE-287: Improper Authentication",
                            "type": "CWE"
                        }
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                }
            ],
            "affected": [
                {
                    "vendor": "Cloud Foundry",
                    "product": "UAA",
                    "repo": "https://github.com/cloudfoundry/uaa",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "3.7.0",
                            "lessThanOrEqual": "79.6.0",
                            "versionType": "semver"
                        },
                        {
                            "status": "unaffected",
                            "version": "79.7.0",
                            "versionType": "semver"
                        }
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                },
                {
                    "vendor": "Cloud Foundry",
                    "product": "cf-deployment",
                    "repo": "https://github.com/cloudfoundry/cf-deployment",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThanOrEqual": "60.4.0",
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                        {
                            "status": "unaffected",
                            "version": "60.5.0",
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                    "lang": "en",
                    "value": "Improper authentication (CWE-287) in the OAuth token endpoint in Cloud Foundry UAA allows a remote, authenticated attacker holding a valid user access token to obtain a fully-privileged client_credentials token for the OAuth client that issued it, by presenting the user token as an OAuth 2.0 Bearer credential on a client_credentials grant request in place of the client’s configured secret.\n\n\n\nUAA’s client_credentials handling does not verify that the Bearer credential supplied for client authentication is actually a client credential (a client secret or a valid configured client authentication method); it accepts any valid access token whose client_id matches the request. A token obtained by a normal end user through a public authorization_code + PKCE flow — scoped only to uaa.user, carrying a user_id, and recording client_auth_method=none — satisfies this check. That user token cannot itself administer OAuth clients (POST /oauth/clients correctly returns 403), but when replayed as Bearer authentication on a client_credentials request for the same client, UAA issues a new client-only token carrying the client’s full authorities, such as clients.write. An attacker can use that token to create arbitrary new OAuth clients, including clients with attacker-chosen authorities, without ever possessing the client’s actual secret.\n\n\n\nExploitation requires a valid user access token (the attacker’s own) for a client that is configured to support both a public, user-facing authorization flow and the client_credentials grant type on the same client_id — a non-default combination. Practical impact scales with the authorities assigned to that client.",
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                            "value": "<p>Improper authentication (CWE-287) in the OAuth token endpoint in Cloud Foundry UAA allows a remote, authenticated attacker holding a valid user access token to obtain a fully-privileged client_credentials token for the OAuth client that issued it, by presenting the user token as an OAuth 2.0 Bearer credential on a client_credentials grant request in place of the client’s configured secret.</p><p>UAA’s client_credentials handling does not verify that the Bearer credential supplied for client authentication is actually a client credential (a client secret or a valid configured client authentication method); it accepts any valid access token whose client_id matches the request. A token obtained by a normal end user through a public authorization_code + PKCE flow — scoped only to uaa.user, carrying a user_id, and recording client_auth_method=none — satisfies this check. That user token cannot itself administer OAuth clients (POST /oauth/clients correctly returns 403), but when replayed as Bearer authentication on a client_credentials request for the same client, UAA issues a new client-only token carrying the client’s full authorities, such as clients.write. An attacker can use that token to create arbitrary new OAuth clients, including clients with attacker-chosen authorities, without ever possessing the client’s actual secret.</p><p>Exploitation requires a valid user access token (the attacker’s own) for a client that is configured to support both a public, user-facing authorization flow and the client_credentials grant type on the same client_id — a non-default combination. Practical impact scales with the authorities assigned to that client.</p>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://www.cloudfoundry.org/blog/cve-2026-59358-uaa-oauth-token-endpoint-vulnerability-allows-user-access-token-reuse-for-client_credentials-grant-type/"
                }
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                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
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                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
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                        "baseScore": 7.6,
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                                "timestamp": "2026-10-06T14:32:48.583303Z",
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