Abror Bakhromov

Taskview Community before 1.56.0 contains a missing authentication vulnerability that allows unauthenticated attackers to register arbitrary OAuth clients and take over user accounts by exploiting the OAuth 2.0 Dynamic Client Registration endpoint, which is enabled by default and requires no authentication. Attackers can send a POST request to the registration endpoint to obtain a client id and client secret, then craft a malicious authorization link pointing to an attacker-controlled redirect URI to capture authorization codes and exchange them for access tokens granting full API access to victim account data.

**Name of the Vulnerable Software and Affected Versions** Databasement versions prior to 1.7.14 **Description** An authorization bypass occurs because invitation tokens are validated only when the acceptance page loads. The system caches the authorization decision and fails to re-verify the token validity during the final acceptance process. An attacker possessing a leaked or forwarded invitation link can load the page while the invitation is still pending and then complete the acceptance after the legitimate user has already done so. This allows the attacker to overwrite the account password and gain authenticated access to managed database credentials and secrets. **Recommendations** Update to version 1.7.14 or later.