CVE-2026-2569: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in dearhive Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer
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.
AI Analysis
Technical Summary
The Dear Flipbook WordPress plugin suffers from a stored cross-site scripting vulnerability (CWE-79) in all versions up to 2.4.20. The issue arises from improper neutralization of input during web page generation, specifically via PDF page labels that are not properly sanitized or escaped. Authenticated users with Author-level privileges or higher can inject arbitrary web scripts that execute in the context of other users viewing the injected pages. This vulnerability could lead to limited confidentiality and integrity impacts but does not affect availability. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and partial impact on confidentiality and integrity.
Potential Impact
An attacker with Author-level access or higher can inject persistent malicious scripts into pages via PDF page labels. These scripts execute in the context of users who view the affected pages, potentially leading to information disclosure or manipulation of content. The vulnerability does not impact system availability. There are no known exploits in the wild, and the impact is limited to confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Author-level access to trusted users only to reduce risk. Monitor for plugin updates from dearhive addressing this vulnerability and apply them promptly once released.
CVE-2026-2569: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in dearhive Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Dear Flipbook WordPress plugin suffers from a stored cross-site scripting vulnerability (CWE-79) in all versions up to 2.4.20. The issue arises from improper neutralization of input during web page generation, specifically via PDF page labels that are not properly sanitized or escaped. Authenticated users with Author-level privileges or higher can inject arbitrary web scripts that execute in the context of other users viewing the injected pages. This vulnerability could lead to limited confidentiality and integrity impacts but does not affect availability. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and partial impact on confidentiality and integrity.
Potential Impact
An attacker with Author-level access or higher can inject persistent malicious scripts into pages via PDF page labels. These scripts execute in the context of users who view the affected pages, potentially leading to information disclosure or manipulation of content. The vulnerability does not impact system availability. There are no known exploits in the wild, and the impact is limited to confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Author-level access to trusted users only to reduce risk. Monitor for plugin updates from dearhive addressing this vulnerability and apply them promptly once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-15T21:48:01.990Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b0acf02f860ef943e36226
Added to database: 3/10/2026, 11:44:48 PM
Last enriched: 4/9/2026, 6:42:59 PM
Last updated: 4/23/2026, 9:46:05 PM
Views: 109
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