{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-9831",
        "assignerOrgId": "1c053176-eef3-4d6a-ae0b-24728c86587b",
        "state": "PUBLISHED",
        "assignerShortName": "ExtremeNetworks",
        "dateReserved": "2026-05-28T12:21:45.520Z",
        "datePublished": "2026-05-29T21:19:17.118Z",
        "dateUpdated": "2026-06-01T13:53:05.140Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "1c053176-eef3-4d6a-ae0b-24728c86587b",
                "shortName": "ExtremeNetworks",
                "dateUpdated": "2026-05-29T21:19:17.118Z"
            },
            "title": "ExtremeCloud IQ Cross Tenant Data Exposure via Extreme Platform One Authentication Race Condition",
            "datePublic": "2026-05-29T21:09:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-362",
                            "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-488",
                            "description": "CWE-488 Exposure of data element to wrong session",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-74",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-74: Manipulating State"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Extreme Networks",
                    "product": "Extreme Platform ONE",
                    "platforms": [
                        "SaaS (Cloud Hosted)"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "25.10.0-104",
                            "versionType": "custom"
                        },
                        {
                            "status": "unaffected",
                            "version": "25.10.0-104",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A race condition in the shared Extreme Platform\nONE IAM Gateway API-key authentication path could, under specific\nhigh-concurrency traffic conditions, intermittently allow requests\nauthenticated with an Extreme Platform ONE /IAM-issued API key to receive\nresponse data for another tenant. The issue was observed through ExtremeCloud\nIQ/XIQ API endpoints and validated against both XIQ/XAPI and Extreme Platform ONE\n/Common Services API paths. XIQ-native tokens and standard OAuth/Bearer JWT\nauthentication were not affected.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "A race condition in the shared Extreme Platform\nONE IAM Gateway API-key authentication path could, under specific\nhigh-concurrency traffic conditions, intermittently allow requests\nauthenticated with an Extreme Platform ONE /IAM-issued API key to receive\nresponse data for another tenant. The issue was observed through ExtremeCloud\nIQ/XIQ API endpoints and validated against both XIQ/XAPI and Extreme Platform ONE\n/Common Services API paths. XIQ-native tokens and standard OAuth/Bearer JWT\nauthentication were not affected."
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://community.extremenetworks.com/t5/security-advisories-formerly/sa-2026-048-extremecloud-iq-cross-tenant-data-exposure-via/ba-p/121851",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 6.3,
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N"
                    }
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Sebastian Koller of Iteas IT Services GmbH (Austria) for responsible discovery and disclosure of this vulnerability.",
                    "type": "finder"
                },
                {
                    "lang": "en",
                    "value": "Sebastian Koller of Iteas IT Services GmbH (Austria) for responsible coordination and providing detailed evidence supporting root cause identification.",
                    "type": "reporter"
                }
            ],
            "source": {
                "advisory": "SA-2026-048",
                "discovery": "EXTERNAL"
            },
            "x_generator": {
                "engine": "Vulnogram 1.0.2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-01T13:52:52.575235Z",
                                "id": "CVE-2026-9831",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-06-01T13:53:05.140Z"
                }
            }
        ]
    }
}