{"id":"CVE-2026-44776","summary":"Kavita: IDOR in /api/Download/*","details":"Kavita is a cross platform reading server. Prior to 0.9.0, the download, size-check, and chapter metadata endpoints do not enforce library-level authorization. A low-privileged user who knows or guesses a chapterId, volumeId, or seriesId belonging to a library they are not assigned to can download the full file contents, query file sizes, and read metadata for that content. This affects /api/Download/volume-size, /api/Download/chapter-size, /api/Download/series-size, /api/Download/volume, /api/Download/chapter, /api/Download/series, and /api/Chapter. This vulnerability is fixed in 0.9.0.","aliases":["GHSA-x3jq-95xw-gwvr"],"modified":"2026-07-15T01:49:05.972735413Z","published":"2026-05-26T17:29:40.897Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44776.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-639"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44776.json"},{"type":"ADVISORY","url":"https://github.com/Kareadita/Kavita/security/advisories/GHSA-x3jq-95xw-gwvr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44776"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kareadita/kavita","events":[{"introduced":"0"},{"fixed":"b7ebf49b1189acc01fb7365ee669418c5d8808bd"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.9.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.8.9.1","v0.8.9","v0.8.8.3","v0.8.8","v0.8.7","v0.8.6.2","v0.8.6.1","v0.8.6","v0.8.5.11","v0.8.5.3","v0.8.5","v0.8.4.2","v0.8.4","v0.8.3.2","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.14","v0.7.13","v0.7.12","v0.7.11.2","v0.7.11.1","v0.7.11","v0.7.10.2","v0.7.10.1","v0.7.10","v0.7.9","v0.7.8","v0.7.7","v0.7.6","v0.7.5","v0.7.4","v0.7.3.1","v0.7.3","v0.7.1.4","v0.5.5","v0.5.4","v0.5.3","v0.5.2.5","v0.5.2.3","v0.5.2","v0.5.1","v0.5.0","v0.4.9","v0.4.8","v0.4.6","v0.4.5","v0.4.3","v0.4.2","v0.4.1.1","v0.3","v0.2","v0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44776.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}