CVE-2026-48078 open-reception CVE debrief

Who should care

Users of OpenReception's appointment booking software, especially those with private channels, should validate and restrict access to their channels. This includes reviewing channel configurations, ensuring proper authentication and authorization for accessing sensitive data, and updating to version 1.0.5 or later to patch the issue. Additionally, operators, platform administrators, vulnerability management teams, and security teams should be aware of the potential risks and take necessary precautions to protect their systems and data. This may involve verifying software versions, assessing channel configurations, and implementing compensating controls for exposed systems while remediation is scheduled and verified. It is also crucial to track exceptions, retest remediated assets, and close the item only after evidence is documented. By taking these steps, organizations can minimize the risk of unauthorized access to private channels and protect sensitive information. To further enhance security, consider implementing monitoring and detection mechanisms to identify potential security incidents and respond promptly to any issues that may arise. Furthermore, maintaining an inventory of assets and regularly reviewing it can help ensure that all systems are accounted for and up-to-date. By prioritizing these tasks, organizations can strengthen their security posture and reduce the likelihood of successful attacks. Finally, establishing a robust change management process can facilitate the timely implementation of security patches and updates, reducing the risk of exploitation. By following these guidelines, organizations can effectively mitigate the risks associated with CVE-2026-48078 and protect their systems and data from potential threats. The key is to adopt a proactive and multi-faceted approach to security, combining technical measures with operational best practices to achieve a robust security posture. In doing so, organizations can minimize the risk of security breaches and ensure the confidentiality, integrity, and availability of their systems and data. To achieve this, it is essential to stay informed about the latest security threats and best practices

Technical summary

The unauthenticated `/api/tenants/{id}/schedule` endpoint in OpenReception's appointment booking software returns every non-archived channel for a tenant, disregarding the channel's `isPublic` flag. This issue allows unauthorized access to private channels, potentially exposing sensitive information such as channel names, descriptions, IDs, agent associations, pause status, confirmation requirements, and computed slot availability for the requested date range. The asymmetry between `addAppointmentToTunnel` (which enforces `eq(channel.isPublic, true)`) and the schedule endpoint (which does not) confirms the design intent: private channels exist as a real access boundary in the booking flow, just not in the schedule disclosure. To address this vulnerability, it is essential to enforce proper authentication and authorization for accessing sensitive data and to update to version 1.0.5 or later to patch the issue.

Defensive priority

CVE-2026-48078 is rated MEDIUM with a CVSS score of 5.3. Consider validating and restricting access to appointment booking platform channels.

Recommended defensive actions

• Validate and restrict access to appointment booking platform channels.
• Enforce proper authentication and authorization for accessing sensitive data.
• Update to version 1.0.5 or later to patch the issue.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE-2026-48078 issue involves OpenReception's appointment booking software. Prior to version 1.0.5, the unauthenticated `/api/tenants/{id}/schedule` endpoint returns every non-archived channel for a tenant regardless of the channel's `isPublic` flag. Channels marked `isPublic = false` are intended to be invisible to public callers; the dashboard creates them deliberately to hide internal-only services from the patient booking UI. The schedule endpoint ignores the flag entirely and discloses channel names, descriptions, IDs, agent associations, pause status, confirmation requirements, and computed slot availability for the requested date range. To verify and mitigate this issue, defenders should review the software version, assess channel configurations, and ensure proper authentication and authorization for accessing sensitive data.

Official resources