CVE-2026-0862
Unknown Unknown - Not Provided
Reflected XSS in PDFCrowd Save as PDF Plugin

Publication date: 2026-01-24

Last updated on: 2026-01-24

Assigner: Wordfence

Description
The Save as PDF Plugin by PDFCrowd plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘options’ parameter in all versions up to, and including, 4.5.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. NOTE: Successful exploitation of this vulnerability requires that the PDFCrowd API key is blank (also known as "demo mode", which is the default configuration when the plugin is installed) or known.
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Meta Information
Published
2026-01-24
Last Modified
2026-01-24
Generated
2026-06-16
AI Q&A
2026-01-24
EPSS Evaluated
2026-06-14
NVD
CVE-2026-0862
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
pdfcrowd save_as_pdf_plugin to 4.5.5 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
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.
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Executive Summary

CVE-2026-0862 is a Reflected Cross-Site Scripting (XSS) vulnerability in the Save as PDF Plugin by PDFCrowd for WordPress, affecting all versions up to 4.5.5. It occurs due to insufficient input sanitization and output escaping of the 'options' parameter. This allows unauthenticated attackers to inject malicious scripts that execute when a user is tricked into clicking a crafted link. Exploitation requires the PDFCrowd API key to be blank or set to the default 'demo mode'. The vulnerability was fixed in version 4.5.6 by changing how the encryption key is generated and used, replacing empty or predictable keys with a random 32-character secret to prevent manipulation. [1]

Impact Analysis

This vulnerability can allow attackers to execute arbitrary scripts in the context of the affected website, potentially leading to theft of user credentials, session hijacking, or performing actions on behalf of the user without their consent. Since it is a reflected XSS, attackers must trick users into clicking malicious links. The impact is limited to cases where the API key is blank or in demo mode, but if exploited, it can compromise user trust and site security. [1]

Detection Guidance

You can detect this vulnerability by checking if your WordPress installation uses the Save as PDF by PDFCrowd plugin version 4.5.5 or earlier and if the PDFCrowd API key is empty or set to 'demo' mode. There are no specific network detection commands provided, but you can verify the plugin version via WordPress admin or by running commands such as 'wp plugin list' to check the version. Additionally, inspecting the plugin settings for the API key value can help identify if it is blank or 'demo'. [1]

Mitigation Strategies

Immediately update the Save as PDF by PDFCrowd plugin to version 4.5.6 or later, which fixes the vulnerability by preventing the use of an empty or 'demo' API key and instead generates a random encryption secret. Also, ensure that the PDFCrowd API key is set to a valid, non-demo value to avoid exploitation. [1]

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