{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-61682",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-10T18:36:58.848Z",
        "datePublished": "2026-09-18T16:11:46.443Z",
        "dateUpdated": "2026-09-21T20:50:17.494Z"
    },
    "containers": {
        "cna": {
            "title": "kcp front-proxy does not strip inbound X-Remote-* identity headers, allowing any authenticated client to inject groups/warrants and impersonate system:masters in any workspace",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-290",
                            "lang": "en",
                            "description": "CWE-290: Authentication Bypass by Spoofing",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-302",
                            "lang": "en",
                            "description": "CWE-302: Authentication Bypass by Assumed-Immutable Data",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-348",
                            "lang": "en",
                            "description": "CWE-348: Use of Less Trusted Source",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.9,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/kcp-dev/kcp/security/advisories/GHSA-c8w2-fgvx-vhv4",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/kcp-dev/kcp/security/advisories/GHSA-c8w2-fgvx-vhv4"
                },
                {
                    "name": "https://github.com/kcp-dev/kcp/commit/7437cdcfec8f927d1a9bf1b2dd1e075d038e27ca",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kcp-dev/kcp/commit/7437cdcfec8f927d1a9bf1b2dd1e075d038e27ca"
                },
                {
                    "name": "https://github.com/kcp-dev/kcp/commit/f913ee890fb2fd9fa78e50c43474b078bfb6aeff",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kcp-dev/kcp/commit/f913ee890fb2fd9fa78e50c43474b078bfb6aeff"
                },
                {
                    "name": "https://github.com/kcp-dev/kcp/releases/tag/v0.31.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kcp-dev/kcp/releases/tag/v0.31.4"
                },
                {
                    "name": "https://github.com/kcp-dev/kcp/releases/tag/v0.32.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/kcp-dev/kcp/releases/tag/v0.32.2"
                }
            ],
            "affected": [
                {
                    "vendor": "kcp-dev",
                    "product": "kcp",
                    "versions": [
                        {
                            "version": "< 0.31.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 0.32.0, < 0.32.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-18T16:11:46.443Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.31.4 and 0.32.2, the kcp front-proxy does not remove inbound X-Remote-User, X-Remote-Group, or X-Remote-Extra-* identity headers before forwarding requests to shards. Any authenticated tenant can inject X-Remote-Group: system:masters, authorization.kcp.io/warrant, authentication.kcp.io/scopes, or a group used for per-workspace required-group gating, and the shard trusts these values as authenticated identity assertions. This allows cross-workspace impersonation, authorization bypass, and arbitrary reading, writing, or deletion of resources, secrets, RBAC data, APIExports, APIBindings, and LogicalClusters. This issue is fixed in versions 0.31.4 and 0.32.2."
                }
            ],
            "source": {
                "advisory": "GHSA-c8w2-fgvx-vhv4",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-18T19:24:33.782681Z",
                                "id": "CVE-2026-61682",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-21T20:50:17.494Z"
                }
            }
        ]
    }
}