CVE-2026-42887: 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…

PriorityP423medium4.5CVSS 3.1

AVNACLPRHUIRSUCHINAN

EPSS

0.21%

10.9th percentile

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
advplyr	audiobookshelf	< 2.33.0	2.33.0

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