CVE-2025-5235 OpenSheetMusicDisplay <= 1.4.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via className Parameter
Authenticated contributors can inject arbitrary scripts via the className parameter, leading to stored XSS execution on victim pages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-5235?
CVE-2025-5235 is a medium-severity cross-site scripting vulnerability in OpenSheetMusicDisplay, published on 30 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2025-5235?
It affects 1 product.
Products include Opensheetmusicdisplay Opensheetmusicdisplay.
How do I fix CVE-2025-5235?
No fix has been published for CVE-2025-5235 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-5235 being exploited?
There is no known exploitation of CVE-2025-5235 in the wild and no public exploit code.
Sources
Also known as GHSA-j45r-rp34-c5fh.