{"schema":"threatline.record/2","record":{"id":"CVE-2026-17538","aliases":[],"summary":"Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress <= 5.6.9 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Customer PII Modification","details":"The LatePoint - Appointment Booking & Reservation plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.6.9. This is due to the process_step_customer() function using is_user_logged_in() as the sole gate before merging POSTed customer data into an existing LatePoint customer, without any ownership checks. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify the personal information (first name, last name, email, phone, notes) of arbitrary LatePoint customers, and, when the contact_merge setting is 'phone', to overwrite the victim's email address and take over the account via a password reset.","categories":["Applications & CMS"],"product":"Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress","vendor":"latepoint","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-17538","source_modified_at":"2026-10-10T02:50:49.302Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress","vendor":"latepoint","versions":[{"version":"0","status":"affected","lessThanOrEqual":"5.6.9","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.4,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00151,"percentile":0.03958,"score_date":"2026-10-23"},"published_at":"2026-10-07T23:27:12.424Z","modified_at":"2026-10-10T02:50:49.302Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-17538","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-10T02:50:49.302Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-17538","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/83cdc51f-b5e1-42b9-972a-7e781f97b43e?source=cve"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/changeset/3631493/"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-10T02:50:40.425401Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-10T02:50:49.302Z","content_hash":"3414bc94a643b7534045b53aa8b118aa96dcdeca1224bc25be4e8a6b70bc52fc"}}