CVE-2025-25205 – Remote Authentication-Bypass can lead to server crash or limited information disclosure due to faulty pattern matching

https://notcve.org/view.php?id=CVE-2025-25205

12 Feb 2025 — 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... • https://github.com/advplyr/audiobookshelf/blob/1a3d70d04100924d41391acb55bd8ddca486a4fa/server/Auth.js#L17-L41 • CWE-202: Exposure of Sensitive Information Through Data Queries CWE-287: Improper Authentication CWE-400: Uncontrolled Resource Consumption •