Kareadita · Kavita · CVE-2026-44776
**Name of the Vulnerable Software and Affected Versions**
Kavita versions prior to 0.9.0
**Description**
Lack of library-level authorization in the download, size-check, and chapter metadata endpoints allows a low-privileged user to access content from libraries they are not assigned to. By knowing or guessing the `chapterId`, `volumeId`, or `seriesId`, an attacker can download full file contents, query file sizes, and read metadata. The affected endpoints are '/api/Download/volume-size', '/api/Download/chapter-size', '/api/Download/series-size', '/api/Download/volume', '/api/Download/chapter', '/api/Download/series', and '/api/Chapter'.
**Recommendations**
Update to version 0.9.0.