CVE-2025-25205: 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…

PriorityP359high8.2CVSS 3.1

AVNACLPRNUINSUCLINAH

EXPLOIT

EPSS

3.83%

88.8th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
advplyr	audiobookshelf	—	—
audiobookshelf	audiobookshelf	>= 2.17.0 < 2.19.1	2.19.1

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