{"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"}}}}

{}

{"affected": [{"affectedData": [{"product": "gpustack", "vendor": "gpustack", "versions": [{"status": "affected", "version": ">= 0.7.1, < 2.2.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-102894", "lastModified": "2026-11-04T22:17:44.440", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-04T22:17:44.440", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/gpustack/gpustack/commit/705edbe1b5feec63959306daecd640e1c70eced2"}, {"source": "security-advisories@github.com", "url": "https://github.com/gpustack/gpustack/commit/adc6d82be34e48390720a1361df616e2ea9d6d45"}, {"source": "security-advisories@github.com", "url": "https://github.com/gpustack/gpustack/pull/5753"}, {"source": "security-advisories@github.com", "url": "https://github.com/gpustack/gpustack/pull/5923"}, {"source": "security-advisories@github.com", "url": "https://github.com/gpustack/gpustack/releases/tag/v2.2.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/gpustack/gpustack/security/advisories/GHSA-62m9-f875-rqw6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-294"}, {"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.7.1,2.2.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "gpustack", "source": "cna", "vendor": "gpustack"}, "product": "gpustack", "vendor": "gpustack"}], "created": "2026-11-04T22:30:13.764497+00:00", "updated": "2026-11-04T22:45:14.986711+00:00", "vendors": ["gpustack", "gpustack$PRODUCT$gpustack"]}