{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-65840",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-22T23:16:47.753Z",
        "datePublished": "2026-11-11T18:32:50.465Z",
        "dateUpdated": "2026-11-11T18:32:50.465Z"
    },
    "containers": {
        "cna": {
            "title": "Fider: Cross-Tenant Authentication Bypass via Missing tenant_id Filter in getVerificationByKey",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-639",
                            "lang": "en",
                            "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 9.6,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/getfider/fider/security/advisories/GHSA-vxjw-gv4f-vq58",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/getfider/fider/security/advisories/GHSA-vxjw-gv4f-vq58"
                },
                {
                    "name": "https://github.com/getfider/fider/releases/tag/v0.36.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/getfider/fider/releases/tag/v0.36.0"
                }
            ],
            "affected": [
                {
                    "vendor": "getfider",
                    "product": "fider",
                    "versions": [
                        {
                            "version": "< 0.36.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-11-11T18:32:50.465Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Fider is a feedback portal for feature requests and suggestions. Prior to version 0.36.0, in multi-tenant mode (HOST_MODE=multi), an attacker can use an email verification key issued by Tenant A to authenticate as the same email address on Tenant B. This completely bypasses tenant isolation and allows unauthorized account takeover across tenants. Single-host deployments (HOST_MODE=single, the default) are NOT affected. This issue has been patched in version 0.36.0."
                }
            ],
            "source": {
                "advisory": "GHSA-vxjw-gv4f-vq58",
                "discovery": "UNKNOWN"
            }
        }
    }
}