CVE-2026-42884: CWE-863: Incorrect Authorization in advplyr audiobookshelf
CVE-2026-42884 is an authorization vulnerability in advplyr's audiobookshelf prior to version 2.32.2. Authenticated users with access to any library can enumerate and read collections from libraries they are not authorized to access, exposing full book metadata. This issue affects the GET /api/collections and GET /api/collections/:id endpoints, which do not properly verify user permissions for each collection's library. The vulnerability has a medium severity with a CVSS score of 4.3. A fix is available in version 2.32.2.
AI Analysis
Technical Summary
The vulnerability in audiobookshelf versions before 2.32.2 involves incorrect authorization (CWE-863) in the API endpoints GET /api/collections and GET /api/collections/:id. These endpoints return collections from all libraries without verifying if the requesting user has access rights to each library. As a result, an authenticated user with access to any library can enumerate and view collections, including full book metadata, from libraries they should not access. This issue is resolved in version 2.32.2.
Potential Impact
An authenticated user with legitimate access to at least one library can access metadata of collections from other libraries they are explicitly restricted from. This leads to unauthorized disclosure of potentially sensitive metadata information. There is no indication of impact on data integrity or availability. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade audiobookshelf to version 2.32.2 or later, where this authorization issue is fixed. Since this is a self-hosted product, administrators should apply the update promptly to prevent unauthorized metadata access. Patch status is not explicitly stated in the vendor advisory, but the description confirms the vulnerability is fixed in 2.32.2.
CVE-2026-42884: CWE-863: Incorrect Authorization in advplyr audiobookshelf
Description
CVE-2026-42884 is an authorization vulnerability in advplyr's audiobookshelf prior to version 2.32.2. Authenticated users with access to any library can enumerate and read collections from libraries they are not authorized to access, exposing full book metadata. This issue affects the GET /api/collections and GET /api/collections/:id endpoints, which do not properly verify user permissions for each collection's library. The vulnerability has a medium severity with a CVSS score of 4.3. A fix is available in version 2.32.2.
CVSS v3.1
Score 4.3medium
Affected software
pkg:github/advplyr/audiobookshelfRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in audiobookshelf versions before 2.32.2 involves incorrect authorization (CWE-863) in the API endpoints GET /api/collections and GET /api/collections/:id. These endpoints return collections from all libraries without verifying if the requesting user has access rights to each library. As a result, an authenticated user with access to any library can enumerate and view collections, including full book metadata, from libraries they should not access. This issue is resolved in version 2.32.2.
Potential Impact
An authenticated user with legitimate access to at least one library can access metadata of collections from other libraries they are explicitly restricted from. This leads to unauthorized disclosure of potentially sensitive metadata information. There is no indication of impact on data integrity or availability. No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade audiobookshelf to version 2.32.2 or later, where this authorization issue is fixed. Since this is a self-hosted product, administrators should apply the update promptly to prevent unauthorized metadata access. Patch status is not explicitly stated in the vendor advisory, but the description confirms the vulnerability is fixed in 2.32.2.
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: 05/12/2026, 01:50:49 UTC
Last enriched: 05/19/2026, 11:00:18 UTC
Last updated: 07/06/2026, 08:51:19 UTC
Views: 71
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