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6.4
pdfl.io WordPress Plugin Allows Hackers to Inject Malicious Code
CVE-2026-4073
Summary
The pdfl.io plugin for WordPress has a security flaw that allows attackers to inject malicious code into web pages. This can happen if a website using the plugin allows users with certain access levels to add content. To fix this, update the plugin to the latest version or remove it if you're not using it.
Original title
The pdfl.io plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pdflio' shortcode in all versions up to, and including, 1.0.5. This is due to insufficient input sanitization ...
Original description
The pdfl.io plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pdflio' shortcode in all versions up to, and including, 1.0.5. This is due to insufficient input sanitization and output escaping on the 'text' shortcode attribute. The output_shortcode() function directly concatenates the user-supplied $text variable into HTML output without applying esc_html() or any other escaping function. 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)
- https://plugins.trac.wordpress.org/browser/pdfl-io/tags/1.0.5/pdflio.php#L117
- https://plugins.trac.wordpress.org/browser/pdfl-io/tags/1.0.5/pdflio.php#L81
- https://plugins.trac.wordpress.org/browser/pdfl-io/trunk/pdflio.php#L117
- https://plugins.trac.wordpress.org/browser/pdfl-io/trunk/pdflio.php#L81
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old...
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2bf70203-61c0-406a-911...
Published: 8 Apr 2026 · Updated: 9 Apr 2026 · First seen: 8 Apr 2026