CVE-2026-65840

{"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"}}]}}

{}

{"affected": [{"affectedData": [{"product": "fider", "vendor": "getfider", "versions": [{"status": "affected", "version": "< 0.36.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-65840", "lastModified": "2026-11-12T22:18:51.470", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.1, "impactScore": 5.8, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-65840", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-12T16:31:15.248085Z", "version": "2.0.3"}}]}, "published": "2026-11-11T19:17:43.937", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/getfider/fider/releases/tag/v0.36.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/getfider/fider/security/advisories/GHSA-vxjw-gv4f-vq58"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.36.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "fider", "source": "cna", "vendor": "getfider"}, "product": "fider", "vendor": "getfider"}], "created": "2026-11-12T20:15:08.434623+00:00", "updated": "2026-11-13T07:00:10.310911+00:00", "vendors": ["getfider", "getfider$PRODUCT$fider"]}