CVE-2026-93955
mediumA vulnerability was detected in grimmory-tools grimmory up to 3.3.3/3.4.1.
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/grimmory-tools/grimmory/ cna@vuldb.com
- https://github.com/grimmory-tools/grimmory/issues/2431 cna@vuldb.com
- https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858 cna@vuldb.com
- https://vuldb.com/cve/CVE-2026-93955 cna@vuldb.com
- https://vuldb.com/submit/943921 cna@vuldb.com
- https://vuldb.com/vuln/407914 cna@vuldb.com
- https://vuldb.com/vuln/407914/cti cna@vuldb.com
- https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858 134c704f-9b21-4f2e-91b3-4a467353bcc0