What is the CVSS score of CVE-2026-27974?

CVE-2026-27974 has a CVSS 3.1 base score of 4.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Audiobookshelf Mobile App are affected by CVE-2026-27974?

Organizations using versions should be aware of moderate risk from CVE-2026-27974, a cross-site scripting vulnerability rated CVSS 4.8.. A patch is available.

How to fix or mitigate CVE-2026-27974?

Within 30 days: Identify affected systems running versions and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Audiobookshelf Mobile App CVE-2026-27974

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-26 security-advisories@github.com

XSS Audiobookshelf Mobile App

4.8

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.8 MEDIUM

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

Patch released

Mar 12, 2026 - 20:23 nvd

Patch available

CVE Published

Feb 26, 2026 - 03:16 nvd

MEDIUM 4.8

DescriptionGitHub Advisory

Audiobookshelf is a self-hosted audiobook and podcast server. A cross-site scripting (XSS) vulnerability exists in versions prior to 0.12.0-beta of the Audiobookshelf mobile application that allows arbitrary JavaScript execution through malicious library metadata. Attackers with library modification privileges (or control over a malicious podcast RSS feed) can execute code in victim users' WebViews, potentially leading to session hijacking, data exfiltration, and unauthorized access to native device APIs. audiobookshelf-app version 0.12.0-beta fixes the issue.

AnalysisAI

Audiobookshelf Mobile App versions up to 0.12.0 is affected by cross-site scripting (xss) (CVSS 4.8).

Technical ContextAI

This vulnerability (CWE-79: Cross-site Scripting (XSS)) affects Audiobookshelf Mobile App. Audiobookshelf is a self-hosted audiobook and podcast server. A cross-site scripting (XSS) vulnerability exists in versions prior to 0.12.0-beta of the Audiobookshelf mobile application that allows arbitrary JavaScript execution through malicious library metadata. Attackers with library modification privileges (or control over a malicious podcast RSS feed) can execute code in victim users' WebViews, potentially leading to session hijacking, data exfiltration, and unauthorized access to native de

RemediationAI

A vendor patch is available — apply it immediately. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.