Stored Cross-Site Scripting Vulnerability in Shariff Wrapper Plugin for WordPress
CVE-2026-4334

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Shariff Wrapper
Vendor
CVE Published:
28 May 2026

What is CVE-2026-4334?

The Shariff Wrapper plugin for WordPress suffers from a Stored Cross-Site Scripting vulnerability due to inadequate input sanitization and output escaping. This flaw allows authenticated users with Contributor-level access and higher to inject malicious scripts via the 'headline' parameter in the [shariff] shortcode. The vulnerability stems from the plugin’s use of a permissive custom wp_kses implementation that fails to properly filter HTML tags, combined with a str_replace operation that permits HTML injection after initial sanitization. As a result, harmful scripts can execute on user pages, posing significant risks to site security.

Affected Version(s)

Shariff Wrapper 0 <= 4.6.20

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/shariff/trunk/...
https://plugins.trac.wordpress.org/browser/shariff/trunk/...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muhammad Yudha - DJ
.