CVE-2026-42883

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the GET /api/libraries/:id/download endpoint validates that the requesting user has access to the library specified in the URL path, but fetches downloadable items solely by attacker-provided IDs without constraining them to that library. An authenticated user with download permission and access to any one library can exfiltrate the full file contents of items belonging to any other library, including libraries they are explicitly denied access to. This vulnerability is fixed in 2.32.2.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-6rvg-w3f5-9gq5
https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-6rvg-w3f5-9gq5

Configurations

No configuration.

History

26 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) Audiobookshelf es un servidor de audiolibros y podcasts autoalojado. Antes de 2.32.2, el endpoint GET /API/libraries/:id/download valida que el usuario solicitante tiene acceso a la biblioteca especificada en la ruta URL, pero obtiene elementos descargables únicamente mediante IDs proporcionados por el atacante sin restringirlos a esa biblioteca. Un usuario autenticado con permiso de descarga y acceso a cualquier biblioteca puede exfiltrar el contenido completo de los archivos de elementos pertenecientes a cualquier otra biblioteca, incluidas las bibliotecas a las que se les ha denegado explícitamente el acceso. Esta vulnerabilidad está corregida en 2.32.2.

Information

Published : 2026-05-11 20:25

Updated : 2026-10-26 18:10

NVD link : CVE-2026-42883

Mitre link : CVE-2026-42883

CVE.ORG link : CVE-2026-42883

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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