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{"cveTags": [], "descriptions": [{"lang": "en", "value": "The Appointment Booking Calendar \u2014 Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's ssa_admin_upcoming_appointments, ssa_admin_upcoming_appointments, and ssa_past_appointments shortcodes in all versions up to, and including, 1.6.8.30 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}, {"lang": "es", "value": "El complemento Appointment Booking Calendar \u2014 Simply Schedule Appointments Booking Plugin para WordPress es vulnerable a cross-site-scripting almacenado a trav\u00e9s de los shortcodes ssa_admin_upcoming_appointments, ssa_admin_upcoming_appointments y ssa_past_appointments en todas las versiones hasta la 1.6.8.30 incluida, debido a una depuraci\u00f3n de entrada insuficiente y al escape de salida en los atributos proporcionados por el usuario. Esto permite a atacantes autenticados, con acceso de colaborador o superior, inyectar scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n al acceder a una p\u00e1gina inyectada."}], "id": "CVE-2025-4667", "lastModified": "2026-04-15T00:35:42.020", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}]}, "published": "2025-06-14T10:15:18.853", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.24/includes/class-shortcodes.php#L718"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.24/includes/class-shortcodes.php#L754"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.8.24/includes/class-shortcodes.php#L784"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3306064/simply-schedule-appointments/tags/1.6.8.32/includes/class-shortcodes.php"}, {"source": "security@wordfence.com", "url": "https://wordpress.org/plugins/simply-schedule-appointments/#developers"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/414173b9-d23e-4e44-bf8c-77a074bb09e9?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": "2026-04-21T20:13:11.513518+00:00", "value": {"mitigation_remediation": ["Update the Simply Schedule Appointments plugin to a version newer than 1.6.8.30.", "If an update is not feasible, restrict or remove the vulnerable shortcode attributes from rendering or ensure that any user\u2011supplied data is escaped before output.", "Consider revoking contributor\u2011level access for users who do not need to edit or manage appointments, or implement stricter permission controls for the plugin."], "summary": {"action": "Immediate Patch", "impact": "Stored Cross\u2011Site Scripting"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the croixhaug:Appointment Booking Calendar \u2014 Simply Schedule Appointments Booking Plugin for WordPress. All released versions up to and including 1.6.8.30 are impacted; later releases beyond 1.6.8.30 are presumed fixed and are not listed.", "description_and_impact": "The Simply Schedule Appointments plugin contains a stored cross\u2011site scripting flaw that occurs when an authenticated user with contributor privileges or higher inserts malicious data into the shortcode attributes ssa_admin_upcoming_appointments, ssa_admin_upcoming_appointments and ssa_past_appointments. The plugin fails to properly sanitize and escape user supplied attributes, leading to arbitrary script injection. Once stored, the injected code executes whenever a page containing the shortcode is rendered for any site visitor, potentially allowing attackers to hijack sessions, deface content or redirect users to malicious sites.", "risk_and_exploitability": "The CVSS score of 6.4 indicates a moderate severity level, while the EPSS score of less than 1\u202f% suggests that the probability of exploitation is currently low. The flaw is not listed in the CISA KEV catalog, implying that no widespread exploits are publicly known. Attackers require authenticated access at the contributor level or higher to inject the malicious payload, meaning that anyone with such privileges to the WordPress administrative interface could perform the exploit. The impact remains confined to users who view pages containing the affected shortcodes, but the execution of arbitrary scripts can compromise session data and the integrity of the site."}}}}, "created": "2026-04-21T20:15:44.580206+00:00", "updated": "2026-04-21T20:15:44.580216+00:00", "vendors": []}