{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16582", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-07-22T13:40:52.863Z", "datePublished": "2026-09-17T21:28:49.022Z", "dateUpdated": "2026-09-18T14:43:25.774Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-09-17T21:28:49.022Z"}, "affected": [{"vendor": "melograno", "product": "Booking for Appointments and Events Calendar \u2013 Amelia", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "2.4.5", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The Booking for Appointments and Events Calendar \u2013 Amelia plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 2.4.5. This is due to the plugin accepting a client-supplied package-redemption identifier as proof of payment without validating it. This makes it possible for unauthenticated attackers to create approved appointment bookings without completing payment"}], "title": "Booking for Appointments and Events Calendar - Amelia <= 2.4.5 - Missing Authorization to Unauthenticated Payment Bypass", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/9e0c6f83-f4ca-4891-b2db-e2ac49d96ee5?source=cve"}, {"url": "https://plugins.trac.wordpress.org/changeset/3640186"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-862 Missing Authorization", "cweId": "CWE-862", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}], "credits": [{"lang": "en", "type": "finder", "value": "ricky morty"}], "timeline": [{"time": "2026-07-22T13:56:52.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-09-17T09:08:03.000Z", "lang": "en", "value": "Disclosed"}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-18T14:39:58.944659Z", "id": "CVE-2026-16582", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-18T14:43:25.774Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Booking for Appointments and Events Calendar \u2013 Amelia", "vendor": "melograno", "versions": [{"lessThanOrEqual": "2.4.5", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Booking for Appointments and Events Calendar \u2013 Amelia plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 2.4.5. This is due to the plugin accepting a client-supplied package-redemption identifier as proof of payment without validating it. This makes it possible for unauthenticated attackers to create approved appointment bookings without completing payment"}], "id": "CVE-2026-16582", "lastModified": "2026-09-18T15:17:06.040", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16582", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-18T14:39:58.944659Z", "version": "2.0.3"}}]}, "published": "2026-09-17T22:16:58.997", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3640186"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/9e0c6f83-f4ca-4891-b2db-e2ac49d96ee5?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.4.5]"}}], "enrichment": {"confidence": 83.0, "confidence_source": "matching", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 83.0, "source": "matching"}]}, "original": {"product": "Booking for Appointments and Events Calendar \u2013 Amelia", "source": "cna", "vendor": "melograno"}, "product": "booking_for_appointments_and_events_calendar", "vendor": "ameliabooking"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.4.5]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "booking_for_appointments_and_events_calendar_\u2013_amelia", "vendor": "wordpress-extensions"}], "created": "2026-09-18T23:45:15.931938+00:00", "updated": "2026-09-29T13:22:26.131013+00:00", "vendors": ["ameliabooking", "ameliabooking$PRODUCT$booking_for_appointments_and_events_calendar", "wordpress-extensions", "wordpress-extensions$PRODUCT$booking_for_appointments_and_events_calendar_\u2013_amelia"]}