Vulnerability · Published Oct 23, 2026 · Assigned by GitHub_M

CVE-2026-65824OpenReception: invite confirmation token is replayable within its validity window and re-issues a registration-bootstrap cookie

High 7.4

In plain English

A high-severity security flaw in appointment-booking-software from open-reception. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).

Severity (CVSS 3.1)7.4High

Exploit odds (30 days)0.3%top 83.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 2.2.1, an attacker who captures a pending invite token can replay it to obtain a passkey-registration credential and register their own passkey on the invited account, taking control of that account. For a staff or tenant-admin invite this yields access to the tenant context tied to that account. This issue has been patched in version 2.2.1.

Affected products (as reported)

Vendor	Product	Versions
open-reception	appointment-booking-software	< 2.2.1

Weakness: CWE-294 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-hvcx-8476-rwv6 x_refsource_CONFIRM
https://github.com/open-reception/appointment-booking-software/commit/da921eb9d36953276577c0a6deb9267bfec03622 x_refsource_MISC
https://github.com/open-reception/appointment-booking-software/releases/tag/v2.2.1 x_refsource_MISC