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6.4

WordPress Plugin Allows Attackers to Inject Malicious Scripts

CVE-2026-4022
Summary

The Show Posts list plugin for WordPress is vulnerable to a security flaw that allows attackers with contributor-level access or higher to inject malicious scripts into web pages. This can happen when an attacker edits a page that uses the plugin's shortcode. To fix this issue, update the plugin to the latest version.

Original title
The Show Posts list – Easy designs, filters and more plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_type' shortcode attribute in the 'swiftpost-list' shortcode in a...
Original description
The Show Posts list – Easy designs, filters and more plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_type' shortcode attribute in the 'swiftpost-list' shortcode in all versions up to, and including, 1.1.0 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.
nvd CVSS3.1 6.4
Vulnerability type
CWE-79 Cross-site Scripting (XSS)
Published: 21 Mar 2026 · Updated: 21 Mar 2026 · First seen: 21 Mar 2026