CVE-2026-42884: CWE-863: Incorrect Authorization in advplyr audiobookshelf
CVE-2026-42884 is an authorization vulnerability in advplyr's audiobookshelf server versions prior to 2. 32. 2. Authenticated users with access to any library can enumerate and read collections, including full book metadata, from libraries they are not authorized to access. This occurs because the GET /api/collections and GET /api/collections/:id endpoints do not properly verify user permissions for each collection's library. The vulnerability has a medium severity with a CVSS score of 4. 3 and is fixed in version 2. 32. 2.
AI Analysis
Technical Summary
Audiobookshelf versions before 2.32.2 have an incorrect authorization issue (CWE-863) where the API endpoints GET /api/collections and GET /api/collections/:id return collections from all libraries without checking if the requesting user has access rights to each library. This allows an authenticated user with access to any single library to enumerate and read collections, including full metadata, from other restricted libraries. The vulnerability is addressed in version 2.32.2.
Potential Impact
An authenticated user with access to any library can access collection metadata from other libraries they should not have permission to view. This leads to unauthorized disclosure of audiobook collection metadata but does not affect data integrity or availability.
Mitigation Recommendations
Upgrade audiobookshelf to version 2.32.2 or later where this authorization flaw is fixed. Since no official patch link or advisory is provided, verify the upgrade from the vendor's official release notes or repository. Patch status is not yet confirmed in the provided data—check the vendor advisory for current remediation guidance.
CVE-2026-42884: CWE-863: Incorrect Authorization in advplyr audiobookshelf
Description
CVE-2026-42884 is an authorization vulnerability in advplyr's audiobookshelf server versions prior to 2. 32. 2. Authenticated users with access to any library can enumerate and read collections, including full book metadata, from libraries they are not authorized to access. This occurs because the GET /api/collections and GET /api/collections/:id endpoints do not properly verify user permissions for each collection's library. The vulnerability has a medium severity with a CVSS score of 4. 3 and is fixed in version 2. 32. 2.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Audiobookshelf versions before 2.32.2 have an incorrect authorization issue (CWE-863) where the API endpoints GET /api/collections and GET /api/collections/:id return collections from all libraries without checking if the requesting user has access rights to each library. This allows an authenticated user with access to any single library to enumerate and read collections, including full metadata, from other restricted libraries. The vulnerability is addressed in version 2.32.2.
Potential Impact
An authenticated user with access to any library can access collection metadata from other libraries they should not have permission to view. This leads to unauthorized disclosure of audiobook collection metadata but does not affect data integrity or availability.
Mitigation Recommendations
Upgrade audiobookshelf to version 2.32.2 or later where this authorization flaw is fixed. Since no official patch link or advisory is provided, verify the upgrade from the vendor's official release notes or repository. Patch status is not yet confirmed in the provided data—check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-30T18:49:06.712Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a028779cbff5d86108b80b5
Added to database: 5/12/2026, 1:50:49 AM
Last enriched: 5/12/2026, 2:08:54 AM
Last updated: 5/12/2026, 3:45:16 AM
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.