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.
History

Wed, 13 May 2026 07:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 11 May 2026 23:15:00 +0000

Type Values Removed Values Added
First Time appeared Advplyr
Advplyr audiobookshelf
Vendors & Products Advplyr
Advplyr audiobookshelf

Mon, 11 May 2026 20:15:00 +0000

Type Values Removed Values Added
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.
Title Audiobookshelf: Path prefix bypass in filesystem existence check leaks out-of-scope file existence
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-05-11T19:52:58.149Z

Updated: 2026-05-11T20:22:08.300Z

Reserved: 2026-04-30T18:49:06.712Z

Link: CVE-2026-42885

cve-icon Vulnrichment

Updated: 2026-05-11T20:21:04.851Z

cve-icon NVD

Status : Deferred

Published: 2026-05-11T20:25:44.877

Modified: 2026-05-12T15:13:21.560

Link: CVE-2026-42885

cve-icon Redhat

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