CVE-2025-25205

Audiobookshelf vulnerability

CVSS

8.2

EPSS

4.0%

EPSS pct

89th

Exploited

No known

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 vendor

Audiobookshelf

Affected product

Audiobookshelf

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Weakness type (CWE)

CWE-202
CWE-287 — Improper Authentication
CWE-400 — Uncontrolled Resource Consumption

Published

2025-02-12

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, high impact to availability.

Its EPSS score of 4.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2025-25205

Confirm whether Audiobookshelf Audiobookshelf is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2025-25205.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2025-25205

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