Vulnerability Description
The Extra Post Images plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' parameter of the extra-images shortcode in all versions up to, and including, 1.0 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/extra-post-images/tags/1.0/epi.php#L1
- https://plugins.trac.wordpress.org/browser/extra-post-images/tags/1.0/epi.php#L9
- https://plugins.trac.wordpress.org/browser/extra-post-images/trunk/epi.php#L92
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c5fbb963-f89d-4037-945
FAQ
What is CVE-2025-13856?
CVE-2025-13856 is a vulnerability with a CVSS score of 6.4 (MEDIUM). The Extra Post Images plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' parameter of the extra-images shortcode in all versions up to, and including, 1.0 due to insufficie...
How severe is CVE-2025-13856?
CVE-2025-13856 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-2025-13856?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.