CVE-2026-52838

{"id": "CVE-2026-52838", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52838", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-14T15:59:57.528356Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 2.6, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 1.0}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "alextselegidis", "product": "easyappointments", "versions": [{"status": "affected", "version": "< 1.6.0"}]}]}], "published": "2026-07-14T16:17:00.410", "references": [{"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": "security-advisories@github.com"}, {"url": "https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-996f-334j-67g7", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "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."}], "lastModified": "2026-07-14T17:17:03.330", "sourceIdentifier": "security-advisories@github.com"}