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{"cveTags": [], "descriptions": [{"lang": "en", "value": "The Appointment Hour Booking \u2013 Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form field configuration parameters in all versions up to, and including, 1.5.60 due to insufficient input sanitization and output escaping on the 'Min length/characters' and 'Max length/characters' field configuration values. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the form builder interface. This only affects multi-site installations and installations where unfiltered_html has been disabled."}, {"lang": "es", "value": "El plugin Appointment Hour Booking \u2013 Booking Calendar para WordPress es vulnerable a cross-site scripting almacenado a trav\u00e9s de par\u00e1metros de configuraci\u00f3n de campos de formulario en todas las versiones hasta la 1.5.60, inclusive, debido a una sanitizaci\u00f3n de entrada y un escape de salida insuficientes en los valores de configuraci\u00f3n de campo 'Min length/characters' y 'Max length/characters'. Esto permite a atacantes autenticados, con acceso de nivel de administrador y superior, inyectar scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a la interfaz del constructor de formularios. Esto solo afecta a las instalaciones multisitio y a las instalaciones donde se ha deshabilitado unfiltered_html."}], "id": "CVE-2026-1083", "lastModified": "2026-04-15T00:35:42.020", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}]}, "published": "2026-01-28T06:15:49.150", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/appointment-hour-booking/tags/1.5.57/js/fields-admin/01_fbuilder.ftext.js#L64"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/appointment-hour-booking/trunk/js/fields-admin/01_fbuilder.ftext.js#L64"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3442650%40appointment-hour-booking&new=3442650%40appointment-hour-booking&sfp_email=&sfph_mail="}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/a5cb1fea-134f-4c81-8f2f-76ee42df7f77?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-15T21:34:31.639263+00:00", "value": {"mitigation_remediation": ["Upgrade the Appointment Hour Booking \u2013 Booking Calendar plugin to version 1.5.61 or later to remove the unsanitized input handling.", "Limit the use of the form builder to trusted administrator accounts only or implement IP\u2011based access restrictions to prevent broader exposure.", "Verify that the WordPress setting 'unfiltered_html' is disabled for all user roles except the true administrators and remove any unintended elevated permissions.", "Optionally, avoid configuring 'Min length/characters' and 'Max length/characters' with non\u2011numeric values; use numeric\u2011only configurations to reduce input fields that could carry scripts."], "summary": {"action": "Patch Now", "impact": "Stored Cross\u2011Site Scripting via form field configuration"}, "threat_synthesis": {"affected_systems": "WordPress sites running Appointment Hour Booking \u2013 Booking Calendar version 1.5.60 or earlier, including installations that use an unfiltered_html setting restricted to trusted users and are configured as multi\u2011site networks. The plugin must be present on a network where administrators can modify form field settings.", "description_and_impact": "The Appointment Hour Booking \u2013 Booking Calendar plugin contains a stored cross\u2011site scripting flaw that allows authenticated administrators to inject arbitrary JavaScript by setting the 'Min length/characters' and 'Max length/characters' options. The injected script is stored and executed each time any user opens the form builder interface. No other privilege escalation is required beyond administrator access, and the vulnerability is only present when the WordPress unfiltered_html capability is disabled on a multi\u2011site installation.", "risk_and_exploitability": "The issue scores a CVSS of 4.4 and has an EPSS probability of less than 1\u202f%. It is not cataloged in the CISA KEV list. Exploitation requires an attacker to be logged in as an administrator or higher and to modify form field settings. Once injected, the script will run on any user who accesses the form builder, affecting all users who load that interface."}}}}, "created": "2026-01-28T12:21:41.579944+00:00", "updated": "2026-04-15T21:45:14.139874+00:00", "vendors": ["codepeople", "codepeople$PRODUCT$appointment_booking_calendar", "wordpress", "wordpress$PRODUCT$wordpress"]}