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vuln-cve/data/2026/65xxx/CVE-2026-65840.json
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{
"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": "2026-11-12T17:56:10.000Z"
},
"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"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-11-12T16:31:15.248085Z",
"id": "CVE-2026-65840",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-12T17:56:10.000Z"
}
}
]
}
}