CVE-2026-52838

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{"affected": [{"affectedData": [{"product": "easyappointments", "vendor": "alextselegidis", "versions": [{"status": "affected", "version": "< 1.6.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Easy!Appointments is a self hosted appointment scheduler. Versions prior to 1.6.0 allow administrators to define a custom \"booking disabled\" message through the booking settings page. That value is stored in the `disable_booking_message` setting via a rich-text editor and later passed directly to the public `booking_message` view without escaping or sanitization. An authenticated administrator can store HTML or JavaScript in this field, enable disabled-booking mode, and trigger stored XSS in every unauthenticated visitor who opens the public booking page. Version 1.6.0 fixes the issue."}, {"lang": "es", "value": "Easy!Appointments es un programador de citas autoalojado. Las versiones anteriores a la 1.6.0 permiten a los administradores definir un mensaje personalizado de \u2019reserva deshabilitada\u2019 a trav\u00e9s de la p\u00e1gina de configuraci\u00f3n de reservas. Ese valor se almacena en la configuraci\u00f3n \u201cdisable_booking_message\u201d a trav\u00e9s de un editor de texto enriquecido y luego se pasa directamente a la vista p\u00fablica \u201cbooking_message\u201d sin escape ni saneamiento. Un administrador autenticado puede almacenar HTML o JavaScript en este campo, habilitar el modo de reserva deshabilitada y desencadenar XSS almacenado en cada visitante no autenticado que abre la p\u00e1gina p\u00fablica de reservas. La versi\u00f3n 1.6.0 corrige el problema."}], "id": "CVE-2026-52838", "lastModified": "2026-10-24T21:10:00.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 2.6, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52838", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-14T15:59:57.528356Z", "version": "2.0.3"}}]}, "published": "2026-07-14T16:17:00.410", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/alextselegidis/easyappointments/commit/629a0415f54f75556c17f4f5d9c77fda1fdbdeae"}, {"source": "security-advisories@github.com", "url": "https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-996f-334j-67g7"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-996f-334j-67g7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.6.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "easyappointments", "source": "cna", "vendor": "alextselegidis"}, "product": "easyappointments", "vendor": "alextselegidis"}], "created": "2026-07-14T16:45:04.163037+00:00", "updated": "2026-07-31T10:15:06.138911+00:00", "vendors": ["alextselegidis", "alextselegidis$PRODUCT$easyappointments"]}