{"id":"CVE-2026-75524","aliases":[],"cve":{"records":[{"id":"CVE-2026-75524","source":"GitHub_M","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-08-17T20:49:21.600Z","published":"2026-10-23T20:29:52.583Z","modified":"2026-10-29T14:33:55.695Z"}],"publishers":[{"name":"GitHub_M","role":"CNA","organizationId":"a0819718-46f1-4df5-94e2-005712e83aaa","modified":"2026-10-23T20:29:52.583Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T14:33:55.695Z"}],"references":[{"url":"https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-q452-m9pf-qj9j","tags":["x_refsource_CONFIRM"],"source":"GitHub_M"},{"url":"https://github.com/open-reception/appointment-booking-software/commit/73663288a8d4ad2ad31d897dc1f494ace2f0e452","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/open-reception/appointment-booking-software/releases/tag/v2.2.2","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-q452-m9pf-qj9j","tags":["exploit"],"source":"CISA-ADP"}],"weaknesses":[{"id":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","source":"GitHub_M"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T14:33:43.306279Z","decisions":[{"name":"Exploitation","value":"poc"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"OpenReception: race condition in add-to-tunnel and create-new-client allows overlapping appointments for one agent","titleSource":"GitHub_M","descriptionSource":"GitHub_M","description":"OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 2.2.2, an attacker overbooks an agent, placing multiple appointments into a single time slot that the system is designed to keep exclusive. The number of overlapping appointments equals the number of concurrent requests, and one booking token is enough because the token is consumed after the insert. This results in the integrity of the booking-calendar breaking and availability being denied to other clients. This issue has been patched in version 2.2.2.","score":5.4,"severity":"medium","published":"2026-10-23T20:29:52.583Z","modified":"2026-10-29T14:33:55.695Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"open-reception","name":"appointment-booking-software","platforms":[],"versions":[{"version":"< 2.2.2","status":"affected"}],"cpes":[],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-75524"}],"remediation":[],"references":["https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-q452-m9pf-qj9j","https://github.com/open-reception/appointment-booking-software/commit/73663288a8d4ad2ad31d897dc1f494ace2f0e452","https://github.com/open-reception/appointment-booking-software/releases/tag/v2.2.2"],"sources":[{"name":"CVE","id":"CVE-2026-75524","modified":"2026-10-29T14:33:55.695Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-75524"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","score":5.4}],"sourceAffected":[],"observedAt":"2026-10-29T15:15:25.736Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T05:40:30.632Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"OpenReception's appointment booking software, versions prior to 2.2.2, has a race condition vulnerability allowing an attacker to create overlapping appointments for one agent. This breaks the booking calendar's integrity and denies availability to other clients. An attacker needs to send concurrent requests to exploit this weakness.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:35:24.587Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-75524"}]}}