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CVE-2026-46552 is an authorization flaw in NocoDB affecting versions prior to 2026.04.1. Shared-base sessions were treated as if they had the same effective permissions as authenticated base viewers. In the affected implementation, requests authenticated only by a shared-base identifier were mapped to the viewer project role, and the access-control logic granted that role capabilities including listing base users and inviting new users. Because the authorization layer did not distinguish shared-link sessions from legitimate authenticated viewer sessions, an attacker possessing only a valid shared-base identifier could enumerate existing base members and send an invitation to an arbitrary email address. The invited recipient could then complete the standard signup and invitation redemption flow and become a real authenticated member of the base. This access could persist even after the owner revoked the original shared link.
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