CVE-2026-42887

Description

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.

PUBLISHED Reserved 2026-04-30 | Published 2026-05-11 | Updated 2026-05-11 | Assigner GitHub_M

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

References

github.com/...kshelf/security/advisories/GHSA-cx29-ghq2-9cm4

cve.org (CVE-2026-42887)

nvd.nist.gov (CVE-2026-42887)

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