CVE-2025-5235

MEDIUM 6.4

OpenSheetMusicDisplay <= 1.4.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via className Parameter

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

The OpenSheetMusicDisplay plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘className’ parameter in all versions up to, and including, 1.4.0 due to insufficient input sanitization and output escaping. 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.

CWE	CWE-79
Vendor	opensheetmusicdisplay
Product	opensheetmusicdisplay
Published	May 30, 2025
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

opensheetmusicdisplay / OpenSheetMusicDisplay

0 ≤ 1.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/a45417ce-d5dd-4706-adbb-d44670de6eb7?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/opensheetmusicdisplay/trunk/opensheetmusicdisplay.php#L473 wordpress.org: https://wordpress.org/plugins/opensheetmusicdisplay/#developers plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3301757/ plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3301757/#file48 github.com: https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/blob/develop/CHANGELOG.md

Credits

Peter Thaleikis