{"id":"CVE-2026-93955","state":"PUBLISHED","title":"grimmory-tools grimmory Download Endpoint KoboController.java streamFileToResponse authorization","description":"A vulnerability was detected in grimmory-tools grimmory up to 3.3.3/3.4.1. Affected by this vulnerability is the function streamFileToResponse of the file backend/src/main/java/org/booklore/controller/KoboController.java of the component Download Endpoint. Performing a manipulation of the argument bookId results in authorization bypass. The attack may be initiated remotely. The exploit is now public and may be used. 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