Description
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.
Published: 2026-05-26
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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History

Wed, 27 May 2026 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Kavita
Kavita kavita
Vendors & Products Kavita
Kavita kavita

Tue, 26 May 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 26 May 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Kavita: IDOR in /api/Download/*
Weaknesses CWE-639
References
Metrics cvssV4_0

{'score': 5.9, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-26T18:27:30.186Z

Reserved: 2026-05-07T19:20:44.689Z

Link: CVE-2026-44776

cve-icon Vulnrichment

Updated: 2026-05-26T18:27:10.428Z

cve-icon NVD

Status : Deferred

Published: 2026-05-26T18:16:51.480

Modified: 2026-06-17T10:51:18.933

Link: CVE-2026-44776

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T09:15:29Z

Weaknesses