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 sanitiz…
Published: 2026-05-11 · CVSS: 4.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7