CVE-2025-46338: Audiobookshelf Vulnerable to Cross-Site-Scripting Reflected via POST Request in /api/upload
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.
Classification
CVE ID: CVE-2025-46338
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.9
CVSS Vector: 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
Problem Types
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Affected Products
Vendor: advplyr
Product: audiobookshelf
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.04% (probability of being exploited)
EPSS Percentile: 10.48% (scored less or equal to compared to others)
EPSS Date: 2025-05-28 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-46338https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-47g3-c5hx-2q3w
https://github.com/advplyr/audiobookshelf/commit/35870a01583b2947030f4e3d4ac769c3ff298386