{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-13400", "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81", "state": "PUBLISHED", "assignerShortName": "WPScan", "dateReserved": "2026-06-26T08:35:42.471Z", "datePublished": "2026-07-27T06:00:03.496Z", "dateUpdated": "2026-07-27T13:53:58.533Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81", "shortName": "WPScan", "dateUpdated": "2026-07-27T06:00:03.496Z"}, "title": "Simply Schedule Appointments < 1.6.12.4 - Unauthenticated Stored XSS via Booking Customer Information", "problemTypes": [{"descriptions": [{"description": "CWE-79 Cross-Site Scripting (XSS)", "lang": "en", "type": "CWE"}]}], "affected": [{"vendor": "Unknown", "product": "Simply Schedule Appointments", "versions": [{"status": "affected", "versionType": "semver", "version": "0", "lessThan": "1.6.12.4"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Simply Schedule Appointments is vulnerable to unauthenticated Stored Cross-Site Scripting in all versions up to and including 1.6.12.2. The root cause is a sanitization-ordering defect: the rendered notification content is decoded back into live HTML after it has already passed through the Simply Schedule Appointments WordPress plugin before 1.6.12.4's wp_kses_post() filter, so a double-encoded payload survives intake and is reintroduced as an executable element at render time."}], "references": [{"url": "https://wpscan.com/vulnerability/501b2929-3216-4587-8124-088fd51becf1/", "tags": ["exploit", "vdb-entry", "technical-description"]}], "credits": [{"lang": "en", "value": "Revanth Hari Narayana Matte", "type": "finder"}, {"lang": "en", "value": "WPScan", "type": "coordinator"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "WPScan CVE Generator"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-79", "lang": "en", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-07-27T13:53:08.821347Z", "id": "CVE-2026-13400", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"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": "2026-07-27T13:53:58.533Z"}}]}}

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