CVE-2026-42887
Audiobookshelf: Stored Cross-Site Scripting in Login Page Custom Message
CVSS Score
4.5
EPSS Score
0.0%
EPSS Percentile
9th
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.
| CWE | CWE-79 |
| Vendor | advplyr |
| Product | audiobookshelf |
| Published | May 11, 2026 |
| Last Updated | May 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
advplyr / audiobookshelf
< 2.33.0