CVE-2026-42886

published 2026-05-11

CVE-2026-42886: Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/backups/upload endpoint decompresses the details entry from an…

Priority P4 26 medium 4.9 CVSS 3.1

AV N AC L PR H UI N S U C N I N A H

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/backups/upload endpoint decompresses the details entry from an uploaded .audiobookshelf ZIP file entirely into memory using zip.entryData(), with no limit on the decompressed size. The upload middleware also has no file size limit. An admin user can upload a crafted ZIP containing a highly compressed details entry that, when decompressed, consumes hundreds of megabytes or gigabytes of memory, crashing the server process via out-of-memory. This vulnerability is fixed in 2.32.2.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
advplyr	audiobookshelf	< 2.33.2	2.33.2

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