Is DearFlip safe? Known vulnerabilities and latest version

The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_content (class attribute of .dvcss element)' parameter in all versions up to, and including, 2.4.30 due to insufficient input sanitization and output escaping. 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 payload is embedded as a Base64-encoded JSON object in a CSS class name on a Custom HTML block; the frontend parseCSSElements() function decodes it client-side with atob() and JSON.parse() and renders the logo property as raw HTML, meaning no server-side or client-side sanitization intercepts the malicious script before DOM insertion.

The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_content (Custom HTML block inner HTML)' parameter in all versions up to, and including, 2.4.30 due to insufficient input sanitization and output escaping. 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. A Contributor-level attacker can insert a crafted .df-element div with data-df-lightbox='thumb' via a Custom HTML block, whose inner HTML is passed as the title argument to parseThumbs() at render time, enabling both innerHTML injection into a span element and attribute breakout via an onerror handler on a constructed img element.

Missing Authorization vulnerability in DearHive DearFlip allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects DearFlip: from n/a through 2.4.27.

The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer plugin for WordPress is vulnerable to DOM-Based Reflected Cross-Site Scripting via the ‘pdf-source’ parameter in all versions up to, and including, 2.3.65 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.

The PDF Flipbook, 3D Flipbook—DearFlip plugin for WordPress is vulnerable to Stored Cross-Site Scripting via outline settings in all versions up to 2.3.52 due to insufficient input sanitization and output escaping on user-supplied data. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer – DearFlip plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'pdf_source' parameter in all versions up to, and including, 2.3.32 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.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in DearHive DearFlip allows Stored XSS.This issue affects DearFlip: from n/a through 2.2.26.

The PDF Flipbook, 3D Flipbook – DearFlip plugin for WordPress is vulnerable to Stored Cross-Site Scripting via outline settings in all versions up to, and including, 2.2.26 due to insufficient input sanitization and output escaping on user supplied data. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.