{"id":"CVE-2026-52837","aliases":["GHSA-xgr6-pqjv-3pf8"],"url":"https://o3.security/vulnerability/CVE-2026-52837","summary":"Easy!Appointments has unauthenticated customer PII disclosure on booking reschedule page","details":"Easy!Appointments is a self hosted appointment scheduler. In versions up to and including 1.5.2, the booking reschedule view at `/index.php/booking/reschedule/{appointment_hash}` (handled by `Booking::index()`) embeds the entire customer record as inline JavaScript (`const vars = {... \"customer_data\": {...}, ...}`) without authentication and without field whitelisting. Anyone in possession of the 12-character `appointment_hash` — which appears in plain text in reschedule emails, confirmation page URLs, and operator-side calendar links — can read every column of that customer's row in the `ea_users` table. Version 1.6.0 contains a patch.","published":"2026-07-14T14:48:26.692Z","modified":"2026-08-12T03:51:26.278076794Z","cvss":null,"epss":{"score":0.00564,"percentile":0.45156,"asOf":"2026-09-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"alextselegidis/easyappointments","fixedVersion":null}],"fix":{"url":"https://github.com/alextselegidis/easyappointments/commit/40bb0b31b531540bc9006efce4220eb0a437ed2b","label":"alextselegidis/easyappointments@40bb0b3"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52837.json"},{"type":"ADVISORY","url":"https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-xgr6-pqjv-3pf8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52837"},{"type":"FIX","url":"https://github.com/alextselegidis/easyappointments/commit/40bb0b31b531540bc9006efce4220eb0a437ed2b"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:26.278076794Z"}}