Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 60.3%
CVSS Severity
CVSS v3 Score 8.2
References
- https://github.com/advplyr/audiobookshelf/blob/1a3d70d04100924d41391acb55bd8ddca486a4fa/server/Auth.js#L17-L41
- https://github.com/advplyr/audiobookshelf/commit/bf8407274e3ee300af1927ee660d078a7a801e1c
- https://github.com/advplyr/audiobookshelf/commit/ec6537656925a43871b07cfee12c9f383844d224
- https://github.com/advplyr/audiobookshelf/pull/3584
- https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-pg8v-5jcv-wrvw
Products affected by CVE-2025-25205
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.17.0
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.17.1
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.17.2
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.17.3
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.17.4
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.17.5
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.17.6
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.17.7
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.18.0
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.18.1
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cpe:2.3:a:audiobookshelf:audiobookshelf:2.19.0