Medium severity4.5NVD Advisory· Published May 11, 2026· Updated May 12, 2026

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.

Affected products

Advplyr/Audiobookshelfinferred
Range: <2.33.0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/advplyr/audiobookshelf/security/advisories/GHSA-cx29-ghq2-9cm4nvd

News mentions

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cvss	0.293
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000