CVE-2026-42885 (GCVE-0-2026-42885)

Vulnerability from cvelistv5 – Published: 2026-05-11 19:52 – Updated: 2026-05-11 20:22
VLAI
Title
Audiobookshelf: Path prefix bypass in filesystem existence check leaks out-of-scope file existence
Summary
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.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-11 20:21 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7681 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
advplyr audiobookshelf Affected: < 2.33.2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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