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CVE-2025-46338— Audiobookshelf Vulnerable to Cross-Site-Scripting Reflected via POST Request in /api/upload

Quick assessment

Affected
advplyr audiobookshelf
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Audiobookshelf是Audiobookshelf开源的一个自托管的有声读物和播客服务器。 Audiobookshelf 2.21.0之前版本存在跨站脚本漏洞，该漏洞源于/api/upload端点输入处理不当，可能导致反射型跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.34% · P27
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I. Basic Information for CVE-2025-46338

Vulnerability Information
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Vulnerability Title
Audiobookshelf Vulnerable to Cross-Site-Scripting Reflected via POST Request in /api/upload
Source: CVE Program / CVE List V5
Vulnerability Description
Audiobookshelf is a self-hosted audiobook and podcast server. Prior to version 2.21.0, an improper input handling vulnerability in the `/api/upload` endpoint allows an attacker to perform a reflected cross-site scripting (XSS) attack by submitting malicious payloads in the `libraryId` field. The unsanitized input is reflected in the server’s error message, enabling arbitrary JavaScript execution in a victim's browser. This issue has been patched in version 2.21.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Audiobookshelf 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Audiobookshelf是Audiobookshelf开源的一个自托管的有声读物和播客服务器。 Audiobookshelf 2.21.0之前版本存在跨站脚本漏洞，该漏洞源于/api/upload端点输入处理不当，可能导致反射型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
advplyr audiobookshelf < 2.21.0 -

II. Public POCs for CVE-2025-46338

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III. Intelligence Information for CVE-2025-46338

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Patches & Fixes for CVE-2025-46338 (1)

Vendor Advisories for CVE-2025-46338 (1)

IV. Related Vulnerabilities

Same product: audiobookshelf
Same vendor: advplyr
Same weakness: CWE-79

V. Comments for CVE-2025-46338

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