CVE-2026-5340

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v3 6.4
EPSS 0.0024
EPSS Percentile 15.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
gopi_plus/Fancy Image Show < 9.1
Published May 12, 2026
Tracked Since May 12, 2026