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**Name of the Vulnerable Software and Affected Versions** CrateDB version 5.5.1 **Description** The issue is related to an authentication bypass vulnerability in the Admin UI component. After configuring password authentication, identity authentication can be bypassed by setting the `X-Real-IP` request header to a specific value and accessing the Admin UI directly using the default user identity. **Recommendations** For CrateDB version 5.5.1, consider disabling access to the Admin UI until a patch is available. As a temporary workaround, restrict the use of the default user identity to minimize the risk of exploitation. Avoid using the `X-Real-IP` request header in the affected Admin UI component until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.