{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-67398", "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "state": "PUBLISHED", "assignerShortName": "hackerone", "dateReserved": "2026-07-29T15:00:02.294Z", "datePublished": "2026-09-03T23:57:15.810Z", "dateUpdated": "2026-09-03T23:57:15.810Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "Missing authorization vulnerability has been discovered in 2Checkout payment gateway of WHMCS from 8.13.0 before 8.13.8, from 9.0.0 before 9.0.8, all other EOL versions from 4.5.0. The vulnerability allows an unauthenticated user to get WHMCS customer's data via 2Checkout payment gateway's endpoint under specific conditions."}], "affected": [{"defaultStatus": "unaffected", "vendor": "WebPros", "product": "WHMCS", "versions": [{"version": "4.5.0", "status": "affected", "lessThanOrEqual": "8.12.2", "versionType": "semver"}, {"version": "8.13.0", "status": "affected", "lessThan": "8.13.8", "versionType": "semver"}, {"version": "9.0.0", "status": "affected", "lessThan": "9.0.8", "versionType": "semver"}]}], "references": [{"url": "https://help.whmcs.com/m/125386/l/2116695-cve-2026-67398-whmcs-security-update-2026-09-03"}], "metrics": [{"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "baseScore": 8.2, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "cweId": "CWE-862", "description": "CWE-862 Missing Authorization"}]}], "credits": [{"lang": "en", "value": "\"boomerang\"", "type": "finder"}], "workarounds": [{"lang": "en", "value": "Deactivate 2Checkout payment gateway."}], "providerMetadata": {"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone", "dateUpdated": "2026-09-03T23:57:15.810Z"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "WHMCS", "vendor": "WebPros", "versions": [{"lessThanOrEqual": "8.12.2", "status": "affected", "version": "4.5.0", "versionType": "semver"}, {"lessThan": "8.13.8", "status": "affected", "version": "8.13.0", "versionType": "semver"}, {"lessThan": "9.0.8", "status": "affected", "version": "9.0.0", "versionType": "semver"}]}], "source": "support@hackerone.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing authorization vulnerability has been discovered in 2Checkout payment gateway of WHMCS from 8.13.0 before 8.13.8, from 9.0.0 before 9.0.8, all other EOL versions from 4.5.0. The vulnerability allows an unauthenticated user to get WHMCS customer's data via 2Checkout payment gateway's endpoint under specific conditions."}], "id": "CVE-2026-67398", "lastModified": "2026-09-04T00:17:13.563", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "support@hackerone.com", "type": "Secondary"}]}, "published": "2026-09-04T00:17:13.563", "references": [{"source": "support@hackerone.com", "url": "https://help.whmcs.com/m/125386/l/2116695-cve-2026-67398-whmcs-security-update-2026-09-03"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "support@hackerone.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.5.0,8.12.2]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.13.0,8.13.8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[9.0.0,9.0.8)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "WHMCS", "source": "cna", "vendor": "WebPros"}, "product": "whmcs", "vendor": "webpros"}], "created": "2026-09-04T01:30:04.516547+00:00", "title": "WHMCS 2Checkout Payment Gateway Missing Authorization Exposes Customer Data", "updated": "2026-09-04T02:00:05.352512+00:00", "vendors": ["webpros", "webpros$PRODUCT$whmcs"]}