Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- 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
FAQ
What is CVE-2026-4073?
CVE-2026-4073 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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...
How severe is CVE-2026-4073?
CVE-2026-4073 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-2026-4073?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.