advplyr audiobookshelf up to 2.20.x Error Message /api/upload libraryId cross site scripting

Summaryinfo

A vulnerability was found in advplyr audiobookshelf up to 2.20.x and classified as problematic. Affected is an unknown function of the file /api/upload of the component Error Message Handler. The manipulation of the argument libraryId results in cross site scripting. This vulnerability is reported as CVE-2025-46338. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in advplyr audiobookshelf up to 2.20.x. It has been classified as problematic. Affected is an unknown code of the file /api/upload of the component Error Message Handler. The manipulation of the argument libraryId with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to version 2.21.0, an improper input handling vulnerability in the `/api/upload` endpoint allows an attacker to perform a reflected cross-site scripting (XSS) attack by submitting malicious payloads in the `libraryId` field. The unsanitized input is reflected in the server’s error message, enabling arbitrary JavaScript execution in a victim's browser. This issue has been patched in version 2.21.0.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-46338 since 04/23/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 2.21.0 eliminates this vulnerability.

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Productinfo

Vendor

• advplyr

Name

• audiobookshelf

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20

Website

• Product: https://github.com/advplyr/audiobookshelf/

CPE 2.3info

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CPE 2.2info

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