CVE-2026-48076 OpenReception's bootstrap booking flow allows unauthenticated booking on isPublic=false channels

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. The new-client booking flow in versions 1.0.1 and prior consists of three calls: bootstrap-challenge returns a 16-bit PoW challenge with difficulty=4 leading hex zeroes, bootstrap-verify...

CVE-2026-48076

OpenReception’s bootstrap booking flow (versions ≤1.0.1) is vulnerable to an unauthenticated booking against private channels due to a missing channel binding in the booking token. The 3-step flow: bootstrap-challenge (PoW), bootstrap-verify (issues a booking access token), and create-new-client ...

GHSA-73X5-H92W-XC2J Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding

Summary A normal authenticated user can read the content of a message in a private channel they do not belong to. GET /api/v1/channels/id/messages/messageid/thread authorizes the caller against the URL channel, but the underlying thread lookup loads the thread parent by id and returns it without...

CVE-2026-53712

SCRAM Salted Challenge Response Authentication Mechanism is part of the family of Simple Authentication and Security Layer SASL, RFC 4422 authentication mechanisms. Prior to 3.3, a flaw in com.ongres.scram:scram-client and com.ongres.scram:scram-common allows an attacker capable of a TLS...