{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-102894",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-29T17:34:42.743Z",
        "datePublished": "2026-11-04T21:18:29.009Z",
        "dateUpdated": "2026-11-04T21:18:29.009Z"
    },
    "containers": {
        "cna": {
            "title": "GPUStack: SAML callback trusts an unverified SAMLResponse, allowing authentication bypass and account takeover",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-294",
                            "lang": "en",
                            "description": "CWE-294: Authentication Bypass by Capture-replay",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-347",
                            "lang": "en",
                            "description": "CWE-347: Improper Verification of Cryptographic Signature",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 9.1,
                        "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:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/gpustack/gpustack/security/advisories/GHSA-62m9-f875-rqw6",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/gpustack/gpustack/security/advisories/GHSA-62m9-f875-rqw6"
                },
                {
                    "name": "https://github.com/gpustack/gpustack/pull/5753",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gpustack/gpustack/pull/5753"
                },
                {
                    "name": "https://github.com/gpustack/gpustack/pull/5923",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gpustack/gpustack/pull/5923"
                },
                {
                    "name": "https://github.com/gpustack/gpustack/commit/705edbe1b5feec63959306daecd640e1c70eced2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gpustack/gpustack/commit/705edbe1b5feec63959306daecd640e1c70eced2"
                },
                {
                    "name": "https://github.com/gpustack/gpustack/commit/adc6d82be34e48390720a1361df616e2ea9d6d45",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gpustack/gpustack/commit/adc6d82be34e48390720a1361df616e2ea9d6d45"
                },
                {
                    "name": "https://github.com/gpustack/gpustack/releases/tag/v2.2.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/gpustack/gpustack/releases/tag/v2.2.2"
                }
            ],
            "affected": [
                {
                    "vendor": "gpustack",
                    "product": "gpustack",
                    "versions": [
                        {
                            "version": ">= 0.7.1, < 2.2.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-11-04T21:18:29.009Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning. From 0.7.1 until 2.2.2, the /auth/saml/callback endpoint decoded SAML XML, used its NameID and attributes to resolve or provision a user, and minted a gpustack_session JWT without calling OneLogin_Saml2_Auth.process_response to verify the signature, issuer, audience, destination, or time conditions. Any network client could submit an identity for an existing user, including an administrator, or provision a new non-administrator account, even when SAML was not configured. Response and Assertion identifiers were not consumed, so captured signed responses could also be replayed. This issue is fixed in version 2.2.2."
                }
            ],
            "source": {
                "advisory": "GHSA-62m9-f875-rqw6",
                "discovery": "UNKNOWN"
            }
        }
    }
}