Description
Audiobookshelf is a self-hosted audiobook and podcast server. Starting in version 2.17.0 and prior to version 2.19.1, a flaw in the authentication bypass logic allows unauthenticated requests to match certain unanchored regex patterns in the URL. Attackers can craft URLs containing substrings like "/api/items/1/cover" in a query parameter (?r=/api/items/1/cover) to partially bypass authentication or trigger server crashes under certain routes. This could lead to information disclosure of otherwise protected data and, in some cases, a complete denial of service (server crash) if downstream code expects an authenticated user object. Version 2.19.1 contains a patch for the issue.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| audiobookshelf | 2.17.0 | 2.19.1 |
References
Similar Threats
- Medium CVE-2026-27963
- Medium CVE-2026-27973
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- High CVE-2025-57800
- Medium CVE-2025-46338
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