{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-102895",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-29T17:34:42.743Z",
        "datePublished": "2026-11-04T21:16:59.842Z",
        "dateUpdated": "2026-11-04T21:16:59.842Z"
    },
    "containers": {
        "cna": {
            "title": "GPUStack: Authentication bypass via trusted loopback source (reverse-proxy TCP peer or X-GPUStack-Real-IP header) grants unauthenticated admin",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-287",
                            "lang": "en",
                            "description": "CWE-287: Improper Authentication",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-290",
                            "lang": "en",
                            "description": "CWE-290: Authentication Bypass by Spoofing",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-346",
                            "lang": "en",
                            "description": "CWE-346: Origin Validation Error",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/gpustack/gpustack/security/advisories/GHSA-gj9m-f8ph-pmhr",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/gpustack/gpustack/security/advisories/GHSA-gj9m-f8ph-pmhr"
                },
                {
                    "name": "https://github.com/gpustack/gpustack/pull/5346",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gpustack/gpustack/pull/5346"
                },
                {
                    "name": "https://github.com/gpustack/gpustack/commit/53f42a6a553542974396d16a4ff6b12bcbedb48d",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gpustack/gpustack/commit/53f42a6a553542974396d16a4ff6b12bcbedb48d"
                },
                {
                    "name": "https://github.com/gpustack/gpustack/releases/tag/v2.2.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gpustack/gpustack/releases/tag/v2.2.0"
                }
            ],
            "affected": [
                {
                    "vendor": "gpustack",
                    "product": "gpustack",
                    "versions": [
                        {
                            "version": "< 2.2.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-11-04T21:16:59.842Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning. Prior to 2.2.0, get_current_user in gpustack/api/auth.py treated a loopback request source as the built-in administrator when force_auth_localhost was false, which was the default. A remote request could appear to originate from 127.0.0.1 because client_ip_getter accepted a same-host reverse proxy peer or a client-supplied X-GPUStack-Real-IP loopback value. The bypass allowed unauthenticated administrative access, including user and model changes, persistent administrator API-key creation, disclosure of worker and cloud-provider secrets, and code execution through POST /v2/inference-backends/from-yaml. Exploitation was observed in the wild against a 2.1.1 deployment. This issue is fixed in version 2.2.0."
                }
            ],
            "source": {
                "advisory": "GHSA-gj9m-f8ph-pmhr",
                "discovery": "UNKNOWN"
            }
        }
    }
}