CVE-2026-73085

Audiobookshelf: Refresh Token Accepted on Resource Endpoints

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.36.0, the jwtAuthCheck function in server/auth/TokenManager.js treats JWTs with the refresh token type as bearer access tokens on API and WebSocket resource endpoints such as /api/me instead of restricting them to /auth/refresh, allowing refresh tokens to authenticate as the associated users. This issue is fixed in version 2.36.0.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

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Audiobookshelf

CVE-2026-71209

audiobookshelf - %2F Encoding Discrepancy Bypasses Cover/Image Auth Exemption Regex, Enabling Unauthenticated Path Traversal

audiobookshelf's authentication-exemption check (server/routers/Auth.js) matches unauthenticated-allowed GET routes against req.path via a regex requiring a literal /items/:id/cover or /authors/:id/image shape, where req.path retains %2F sequences URL-encoded. CacheManager.handleCoverCache then joins this decoded value into a cache file path and streams the result before any database-backed ownership check.

CVSS 3.1 · 7.5 High EPSS 2.2% KEV · Not listed

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Audiobookshelf

CVE-2026-42883

Audiobookshelf: Cross-library file exfiltration via unscoped bulk download endpoint

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the GET /api/libraries/:id/download endpoint validates that the requesting user has access to the library specified in the URL path, but fetches downloadable items solely by attacker-provided IDs without constraining them to that library. An authenticated user with download permission and access to any one library can exfiltrate the full file contents of items belonging to any other library, including libraries they are explicitly denied access to. This vulnerability is fixed in 2.32.2.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

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Audiobookshelf

CVE-2026-42888

Audiobookshelf: Path Traversal vulnerability in the audiobookshelf project

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the podcast creation endpoint at server/controllers/PodcastController.js accepts a user-controlled file path without sufficient boundary validation to ensure it remains within the intended library directory. This vulnerability is fixed in 2.32.2.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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Audiobookshelf

CVE-2026-42885

Audiobookshelf: Path prefix bypass in filesystem existence check leaks out-of-scope file existence

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/filesystem/pathexists endpoint uses String.startsWith() to validate that a resolved file path is within a library folder. This check fails for sibling directories whose names share a common prefix (e.g., /audiobooks vs /audiobooks-private), allowing authenticated users with upload permission to probe file existence outside their authorized library folder boundaries. This vulnerability is fixed in 2.32.2.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

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Audiobookshelf

CVE-2026-42887

Audiobookshelf: Stored Cross-Site Scripting in Login Page Custom Message

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.33.0, a stored cross-site scripting (XSS) vulnerability exists in the Login Page due to improper sanitization of the authLoginCustomMessage field of the /api/auth-settings endpoint. An attacker with administrative privileges can inject arbitrary HTML/JavaScript that will be rendered on the login page for all users. This vulnerability is fixed in 2.33.0.

CVSS 3.1 · 4.5 Medium EPSS < 1% KEV · Not listed

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Audiobookshelf

CVE-2026-42884

Audiobookshelf: Collection endpoints bypass library access controls exposing restricted library data

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the GET /api/collections and GET /api/collections/:id endpoints return collections from all libraries without checking whether the requesting user has access to each collection's library. An authenticated user with access to any library can enumerate and read collections (including full book metadata) from libraries they are explicitly restricted from accessing. This vulnerability is fixed in 2.32.2.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

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CVE-2026-42886

Audiobookshelf: Memory amplification DoS via oversized compressed details entry in backup upload

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the POST /api/backups/upload endpoint decompresses the details entry from an uploaded .audiobookshelf ZIP file entirely into memory using zip.entryData(), with no limit on the decompressed size. The upload middleware also has no file size limit. An admin user can upload a crafted ZIP containing a highly compressed details entry that, when decompressed, consumes hundreds of megabytes or gigabytes of memory, crashing the server process via out-of-memory. This vulnerability is fixed in 2.32.2.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed

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CVE-2026-27973

Audiobookshelf has Stored XSS in ItemSearchCard.vue via Audiobook Metadata (Search Results on Mobile App)

Audiobookshelf is a self-hosted audiobook and podcast server. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 0.12.0-beta of the Audiobookshelf mobile application that allows arbitrary JavaScript execution through malicious library metadata. Attackers with library modification privileges can execute code in victim users' browsers/WebViews, potentially leading to session hijacking, data exfiltration, and unauthorized access to native device APIs. The issue is fixed in audiobookshelf-app version 0.12.0-beta, corresponding to audiobookshelf version 2.12.0.

CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed

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Advplyr Audiobookshelf

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Audiobookshelf Audiobookshelf Audiobookshelf Mobile App

CVE-2026-27963

Audiobookshelf has Stored XSS in Tooltip.vue via Audiobook Metadata

Audiobookshelf is a self-hosted audiobook and podcast server. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 2.32.0 of the Audiobookshelf web application that allows arbitrary JavaScript execution through malicious library metadata. Attackers with library modification privileges can execute code in victim users' browsers, potentially leading to session hijacking and data exfiltration. Version 2.32.0 contains a patch for the issue.

CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed

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Advplyr Audiobookshelf

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Audiobookshelf Audiobookshelf

CVE-2026-27974

Audiobooksheld VUlnerable to Stored XSS in WrappingMarquee.js via Audiobook Metadata (Mobile App Audio Player)

Audiobookshelf is a self-hosted audiobook and podcast server. A cross-site scripting (XSS) vulnerability exists in versions prior to 0.12.0-beta of the Audiobookshelf mobile application that allows arbitrary JavaScript execution through malicious library metadata. Attackers with library modification privileges (or control over a malicious podcast RSS feed) can execute code in victim users' WebViews, potentially leading to session hijacking, data exfiltration, and unauthorized access to native device APIs. audiobookshelf-app version 0.12.0-beta fixes the issue.

CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed

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Advplyr Audiobookshelf

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Audiobookshelf Audiobookshelf Mobile App

CVE-2025-57800

Audiobookshelf vulnerable to OIDC token exfiltration and account takeover

Audiobookshelf is an open-source self-hosted audiobook server. In versions 2.6.0 through 2.26.3, the application does not properly restrict redirect callback URLs during OIDC authentication. An attacker can craft a login link that causes Audiobookshelf to store an arbitrary callback in a cookie, which is later used to redirect the user after authentication. The server then issues a 302 redirect to the attacker-controlled URL, appending sensitive OIDC tokens as query parameters. This allows an attacker to obtain the victim's tokens and perform full account takeover, including creating persistent admin users if the victim is an administrator. Tokens are further leaked via browser history, Referer headers, and server logs. This vulnerability impacts all Audiobookshelf deployments using OIDC; no IdP misconfiguration is required. The issue is fixed in version 2.28.0. No known workarounds exist.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

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Advplyr Audiobookshelf

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Audiobookshelf Audiobookshelf

CVE-2024-35236

Audiobookshelf Cross-Site-Scripting vulnerability via crafted ebooks

Audiobookshelf is a self-hosted audiobook and podcast server. Prior to version 2.10.0, opening an ebook with malicious scripts inside leads to code execution inside the browsing context. Attacking a user with high privileges (upload, creation of libraries) can lead to remote code execution (RCE) in the worst case. This was tested on version 2.9.0 on Windows, but an arbitrary file write is powerful enough as is and should easily lead to RCE on Linux, too. Version 2.10.0 contains a patch for the vulnerability.

CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed

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Advplyr Audiobookshelf

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Audiobookshelf Audiobookshelf

CVE-2024-43797

Path Traversal in audiobookshelf

audiobookshelf is a self-hosted audiobook and podcast server. A non-admin user is not allowed to create libraries (or access only the ones they have permission to). However, the `LibraryController` is missing the check for admin user and thus allows a path traversal issue. Allowing non-admin users to write to any directory in the system can be seen as a form of path traversal. However, since it can be restricted to only admin permissions, fixing this is relatively simple and falls more into the realm of Role-Based Access Control (RBAC). This issue has been addressed in release version 2.13.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS 3.1 · 6.3 Medium EPSS < 1% KEV · Not listed

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Advplyr Audiobookshelf

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Audiobookshelf Audiobookshelf