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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2026-42885

Audiobookshelf: Path prefix bypass in filesystem existence check leaks out-of-scope file existence

Description

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/filesystem/pathexists endpoint uses String.startsWith() to validate that a resolved file path is within a library folder. This check fails for sibling directories whose names share a common prefix (e.g., /audiobooks vs /audiobooks-private), allowing authenticated users with upload permission to probe file existence outside their authorized library folder boundaries. This vulnerability is fixed in 2.32.2.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

advplyr audiobookshelf

  • < 2.33.2affected

References