CVE-2026-42883 Details
Description
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.
A vulnerability in Audiobookshelf versions prior to 2.32.2 allows authenticated users with download permissions to exfiltrate files from libraries they do not have access to. The issue arises in the 'GET /api/libraries/:id/download' endpoint, which fails to properly scope downloaded items to the specified library. Instead, it retrieves items based solely on attacker-provided IDs, enabling access to unauthorized libraries' contents. This flaw is particularly concerning as it undermines the application's access control model, allowing for bulk data exfiltration from multiple libraries with a single request.
Users are advised to update to Audiobookshelf version 2.32.2, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 11, 2026CISA-ADP
Assessed May 12, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-6rvg-w3f5-9gq5 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-6rvg-w3f5-9gq5 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Audiobookshelf | 2.32.1 (semver) |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | CVE Modified | CISA-ADP |
| May 11, 2026 | New CVE Received | [email protected] |