{"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"}}]}}