{"id":"CVE-2026-75524","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-75524","generatedAt":"2026-10-28T03:30:49.363Z","title":"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.","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.","published":"2026-10-23T21:17:25.000Z","lastModified":"2026-10-26T13:48:07.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"},"cwe":["CWE-367"],"affected":[],"epss":{"score":0.00186,"percentile":0.08128,"date":"2026-10-26","history":[{"date":"2026-10-24","score":0.00313,"percentile":0.23054}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.19%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-23T21:17:25.000Z","detail":{"score":"5.4","severity":"MEDIUM","publishedAt":"2026-10-23T21:17:25.010Z"},"summary":"New CVE, medium severity (CVSS 5.4)."}],"references":[{"url":"https://github.com/open-reception/appointment-booking-software/commit/73663288a8d4ad2ad31d897dc1f494ace2f0e452","source":"security-advisories@github.com"},{"url":"https://github.com/open-reception/appointment-booking-software/releases/tag/v2.2.2","source":"security-advisories@github.com"},{"url":"https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-q452-m9pf-qj9j","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-75524","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}