What is CVE-2025-46338?

CVE-2025-46338 is a medium-severity vulnerability in Advplyr Audiobookshelf, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-04-29.

How severe is CVE-2025-46338?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Advplyr Audiobookshelf

CVE-2025-46338

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-04-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (27.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Advplyr Audiobookshelf — versions < 2.21.0
Audiobookshelf

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/advplyr/audiobookshelf/security/advisories/GHSA-47g3-c5hx-2q3w (Exploit, Vendor Advisory)
github.com/advplyr/audiobookshelf/commit/35870a01583b2947030f4e3d4ac769c3ff2983… (Patch)

Frequently asked questions

What is CVE-2025-46338?: CVE-2025-46338 is a medium-severity vulnerability in Advplyr Audiobookshelf, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-04-29.
How severe is CVE-2025-46338?: Medium severity. CVSS v3 base score is 6.1 out of 10.