{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-70478",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-04T15:24:41.339Z",
        "datePublished": "2026-08-04T19:37:22.020Z",
        "dateUpdated": "2026-08-04T19:37:22.020Z"
    },
    "containers": {
        "cna": {
            "title": "Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-200",
                            "lang": "en",
                            "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "HIGH",
                        "subIntegrityImpact": "LOW",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 9.2,
                        "baseSeverity": "CRITICAL",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-qgvm-j2hm-6m38",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-qgvm-j2hm-6m38"
                }
            ],
            "affected": [
                {
                    "vendor": "FlowiseAI",
                    "product": "Flowise",
                    "versions": [
                        {
                            "version": "< 3.1.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-04T19:37:22.020Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST /api/v1/oauth2-credential/refresh/:credentialId endpoint is included in WHITELIST_URLS and requires no authentication. The endpoint decrypts the stored credential, sends a refresh request to the configured OAuth provider with the client secret and refresh token, and returns the refreshed access_token in the response body. An attacker with a credential ID can use the token to access the victim's connected service and can also exhaust refresh-token quota. This issue is fixed in 3.1.3."
                }
            ],
            "source": {
                "advisory": "GHSA-qgvm-j2hm-6m38",
                "discovery": "UNKNOWN"
            }
        }
    }
}