dougblackjr pdfl.io Plugin up to 1.0.5 on WordPress Shortcode output_shortcode text cross site scripting

Summaryinfo

A vulnerability was found in dougblackjr pdfl.io Plugin up to 1.0.5 on WordPress. It has been rated as problematic. The affected element is the function output_shortcode of the component Shortcode Handler. The manipulation of the argument text leads to cross site scripting. This vulnerability is listed as CVE-2026-4073. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in dougblackjr pdfl.io Plugin up to 1.0.5 on WordPress and classified as problematic. This issue affects the function output_shortcode of the component Shortcode Handler. The manipulation of the argument text with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

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.

The weakness was presented by zakaria. The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-4073 since 03/12/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 1.0.5 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• dougblackjr

Name

• pdfl.io Plugin

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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