Vulnerability Description
The Fancy Image Show plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `fancy-img-show` shortcode in all versions up to, and including, 9.1 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/fancy-image-show/tags/9.1/fancy-image
- https://plugins.trac.wordpress.org/browser/fancy-image-show/tags/9.1/fancy-image
- https://plugins.trac.wordpress.org/browser/fancy-image-show/trunk/fancy-image-sh
- https://www.wordfence.com/threat-intel/vulnerabilities/id/131d07ad-4e87-4137-a5d
FAQ
What is CVE-2026-5340?
CVE-2026-5340 is a vulnerability with a CVSS score of 6.4 (MEDIUM). The Fancy Image Show plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `fancy-img-show` shortcode in all versions up to, and including, 9.1 due to insufficient input s...
How severe is CVE-2026-5340?
CVE-2026-5340 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-2026-5340?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.