efreja vulnerabilities and threats

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in efreja Music Sheet Viewer music-sheet-viewer allows Path Traversal.This issue affects Music Sheet Viewer: from n/a through <= 4.1.

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.

The Music Sheet Viewer plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to, and including, 4.1 via the read_score_file() function. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. CVE-2025-25155 is likely a duplicate of this issue.