CVE-2024-13670: Music Sheet Viewer <= 4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
Description
The Music Sheet Viewer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'pn_msv' shortcode in all versions up to, and including, 4.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Classification
CVE ID: CVE-2024-13670
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.4
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected Products
Vendor: efreja
Product: Music Sheet Viewer
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 16.62% (scored less or equal to compared to others)
EPSS Date: 2025-02-28 (when was this score calculated)
References
https://www.wordfence.com/threat-intel/vulnerabilities/id/8ec4eb8a-7b03-4392-9137-4f17622bfe54?source=cvehttps://plugins.trac.wordpress.org/browser/music-sheet-viewer/trunk/music-sheet-viewer.php#L395