CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via PDF page labels in all versions up to, and including, 2.4.20 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
Dear Flipbook versions up to 2.4.20 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other users viewing the flipbook. The vulnerability affects the scope beyond the vulnerable component, potentially compromising site security and user data.
What an attacker can do
Inject malicious scripts that run in other users' browsers when they view the flipbook.
Potential impact on your site
Malicious users can steal session tokens, deface content, or redirect visitors to phishing sites.
Conditions required to exploit
Attacker must have a low-privilege authenticated account on the site.
Key dates
External resources
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