Vulnerability Description
The Osom Blocks – Custom Post Type listing block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘class_name’ parameter in all versions up to, and including, 1.2.1 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Osompress | Osom Blocks | < 1.2.2 |
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/osomblocks/trunk/blocks/cpt-list/indeProduct
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
- https://wordpress.org/plugins/osomblocks/#developersProduct
- https://www.wordfence.com/threat-intel/vulnerabilities/id/54e022df-0dc7-4f60-811Third Party Advisory
FAQ
What is CVE-2025-5940?
CVE-2025-5940 is a vulnerability with a CVSS score of 6.4 (MEDIUM). The Osom Blocks – Custom Post Type listing block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘class_name’ parameter in all versions up to, and including, 1.2.1 due to ins...
How severe is CVE-2025-5940?
CVE-2025-5940 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-5940?
Check the references section above for vendor advisories and patch information. Affected products include: Osompress Osom Blocks.