Vulnerability · Published Apr 8, 2026 · Assigned by Wordfence
CVE-2026-4073pdfl.io <= 1.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'text' Shortcode Attribute
Medium 6.4
In plain English
A medium-severity cross-site scripting in pdfl.io from dougblackjr. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| dougblackjr | pdfl.io | 0 – through 1.0.5 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2bf70203-61c0-406a-9110-b60761b4a513?source=cve
- https://plugins.trac.wordpress.org/browser/pdfl-io/trunk/pdflio.php#L117
- https://plugins.trac.wordpress.org/browser/pdfl-io/tags/1.0.5/pdflio.php#L117
- https://plugins.trac.wordpress.org/browser/pdfl-io/trunk/pdflio.php#L81
- https://plugins.trac.wordpress.org/browser/pdfl-io/tags/1.0.5/pdflio.php#L81
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3492458%40pdfl-io&new=3492458%40pdfl-io