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    "cveMetadata": {
        "cveId": "CVE-2026-108865",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-10-11T13:17:24.455Z",
        "datePublished": "2026-10-11T13:26:10.714Z",
        "dateUpdated": "2026-10-11T13:26:10.714Z"
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                "dateUpdated": "2026-10-11T13:26:10.714Z"
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            "datePublic": "2026-10-11T00:00:00.000Z",
            "title": "AmoyLab Unla through 0.10.0 OAuth2 Authentication Bypass via /authorize",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "AmoyLab Unla through 0.10.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain valid access tokens because the OAuth2 server never authenticates a resource owner. Attackers can register a client, request a code from /authorize, and exchange it at /token to access OAuth2-protected MCP prefixes, proxied upstream APIs and injected credentials."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Authentication",
                            "cweId": "CWE-287",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "AmoyLab",
                    "product": "Unla",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThanOrEqual": "0.10.0",
                            "versionType": "semver"
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                    "packageURL": "pkg:golang/github.com/amoylab/unla",
                    "repo": "https://github.com/AmoyLab/Unla"
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                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH"
                    }
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                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "NONE",
                        "baseScore": 8.2,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/amoylab-unla-oauth-self-issued-token-authz",
                    "tags": [
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                {
                    "url": "https://github.com/AmoyLab/Unla/blob/v0.10.0/internal/auth/oauth.go#L86-L147",
                    "tags": [
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                },
                {
                    "url": "https://github.com/AmoyLab/Unla/blob/v0.10.0/internal/core/server.go#L229-L261",
                    "tags": [
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                    ]
                },
                {
                    "url": "https://github.com/AmoyLab/Unla",
                    "tags": [
                        "product"
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                },
                {
                    "name": "VulnCheck Advisory: AmoyLab Unla through 0.10.0 OAuth2 Authentication Bypass via /authorize",
                    "tags": [
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                    ],
                    "url": "https://www.vulncheck.com/advisories/amoylab-unla-through-0.10.0-oauth2-authentication-bypass-via-authorize"
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        }
    }
}