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CVE-2026-42885

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

Description (CNA)

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 (CNA)

Vendor / productVersions
advplyr / audiobookshelfaffected < 2.33.2

CWE

CWE-22

References

ADP enrichment

CISA-ADP

No English description supplied.