💣Exploit CVE-2025-25205 - Audiobookshelf Regex Pattern Authentication Bypass

[Mental_Outlaw]

CVE ID : CVE-2025-25205
Published : Feb. 12, 2025, 7:15 p.m. | 52 minutes ago
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.
Severity: 8.2 | HIGH
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