{"id":"CVE-2026-16037","revision":null,"records":[{"revision":"b2c04da3046849a99e94bd424b822a39","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-16037","aliases":[],"title":"Callback Authentication Bypass via Timing Attack in PayTR's PayTR Virtual Pos iFrame API WHMCS Module","description":"Observable timing discrepancy vulnerability in PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module allows Black Box Reverse Engineering.\n\nThis issue affects PayTR Virtual Pos iFrame API WHMCS Module: from v9.0.0 before v9.0.3.","state":0,"publishedAt":"2026-09-08T15:12:44.262+00:00","modifiedAt":"2026-10-01T12:41:42.055+00:00","affected":[{"ecosystem":"Vendor product","name":"PayTR Virtual Pos iFrame API WHMCS Module","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"PayTR Payment and Electronic Money Institution Inc.\",\n                    \"product\": \"PayTR Virtual Pos iFrame API WHMCS Module\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"v9.0.0\",\n                            \"lessThan\": \"v9.0.3\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"references":["https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1034"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-16037","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-16037","identifiers":["CVE-2026-16037"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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