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CVE-2026-42887 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:4.8 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:4.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-cx29-ghq2-9cm4	CISA-ADP	AdvisoryExploitRemedyVendor
https://github.com/advplyr/audiobookshelf/security/advisories/GHSA-cx29-ghq2-9cm4	[email protected]	AdvisoryExploitRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
Audiobookshelf	< 2.33.0 (semver)
CPE cpe:2.3:a:audiobookshelf:audiobookshelf:::::::: Remediation Upgrade: >= 2.33.0moderate effort

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
May 12, 2026	CVE Modified	CISA-ADP
May 11, 2026	New CVE Received	[email protected]