What’s Vulnerable › Vulnerabilities

CVE-2026-5340: Fancy Image Show <= 9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-12 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• gopi_plus Fancy Image Show: through 9.1

References

• https://plugins.trac.wordpress.org/browser/fancy-image-show/tags/9.1/fancy-image-show.php#L117
• https://plugins.trac.wordpress.org/browser/fancy-image-show/tags/9.1/fancy-image-show.php#L178
• https://plugins.trac.wordpress.org/browser/fancy-image-show/trunk/fancy-image-show.php#L178
• https://www.wordfence.com/threat-intel/vulnerabilities/id/131d07ad-4e87-4137-a5df-2b74db1e9ae8?source=cve

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