{"id":"CVE-2026-65825","title":"OpenReception: one tenant's throttle row disables the PIN brute-force throttle for the same identifier in other tenants","summary":"OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. In versions 2.1.0 and prior, a returning client's six-digit booking PIN can be brute-forced online in the victim tenant. A succes…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","cvssSource":"cna","cwe":["CWE-307"],"vendor":"open-reception","product":"appointment-booking-software","affected":["appointment-booking-software <= 2.1.0"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T20:29:17.174Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-65825","references":[{"url":"https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-v4q4-xmqf-gmq8","label":"https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-v4q4-xmqf-gmq8"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T21:38:13.059Z","slug":"CVE-2026-65825","body":"## Overview\n\nOpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. In versions 2.1.0 and prior, a returning client's six-digit booking PIN can be brute-forced online in the victim tenant. A successful guess yields the client's booking access token, granting access to that client's appointment tunnel, which holds their end-to-end-encrypted appointment data, and the ability to act as the client, for example adding or cancelling appointments in the tunnel. The bypass is cross-tenant: state owned by one tenant removes an authentication protection of a different tenant. This crossing of the tenant boundary is the basis for the scope-changed vector. At time of publication, there are no publicly available patches.\n\n## Affected\n\n- `appointment-booking-software <= 2.1.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}