{"id":"CVE-2026-93955","published":"2026-09-19T23:17:09.077","lastModified":"2026-09-21T21:17:20.133","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. Issue #2431 is closed as completed, but its only comment states that the issue “has already been reported elsewhere.” No fixing commit or pull request is identified there.","cvssScore":4.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwes":["CWE-285","CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/grimmory-tools/grimmory/","tags":[]},{"url":"https://github.com/grimmory-tools/grimmory/issues/2431","tags":[]},{"url":"https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858","tags":[]},{"url":"https://vuldb.com/cve/CVE-2026-93955","tags":[]},{"url":"https://vuldb.com/submit/943921","tags":[]},{"url":"https://vuldb.com/vuln/407914","tags":[]},{"url":"https://vuldb.com/vuln/407914/cti","tags":[]},{"url":"https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858","tags":[]}],"exploitRefs":[{"url":"https://github.com/grimmory-tools/grimmory/","tags":[]},{"url":"https://github.com/grimmory-tools/grimmory/issues/2431","tags":[]},{"url":"https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858","tags":[]},{"url":"https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858","tags":[]}],"hasPoc":true,"ai":null}