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TI-2026-32661 Aliases CVE-2026-44776

Kavita: IDOR in /api/Download/*

Priority MEDIUM 60CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0025 16th percentileScored 2026-11-07
Fix Fixed Kavita (Kareadita): 0.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
KareaditaKavitabefore 0.9.00.9.0Patch availableCNA
  • Kavita VendorKareadita Affected before 0.9.0 Fixed in 0.9.0 Patch available CNA

Remediation

  • Fix · CNA Kavita (Kareadita) Fixed in 0.9.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44776

References

Other 1

  • TI-2022-03662 Improper Restriction of Excessive Authentication Attempts in kareadita/kavita CVSS 3.1CRITICAL 9.8
  • TI-2022-26712 Path traversal in Kavita lets unauthenticated attackers read files CVSS 4.0HIGH 8.7
  • TI-2022-03617 Improper Restriction of Excessive Authentication Attempts in kareadita/kavita CVSS 3.1MEDIUM 5.3
  • TI-2026-34790 Kavita: Pre-Auth Account Takeover CVSS 4.0CRITICAL 9.3
  • TI-2026-32660 Kavita: No authentication at /api/Reader/image CVSS 4.0MEDIUM 6.9
  • TI-2023-00871 Missing Authentication for Critical Function in kareadita/kavita CVSS 3.1HIGH 8.1
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences