Stored Cross-Site Scripting Vulnerability in Responsive Check Plugin for WordPress
CVE-2026-8844

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Responsive Check
Vendor
CVE Published:
27 May 2026

What is CVE-2026-8844?

The Responsive Check plugin for WordPress has a vulnerability that allows for Stored Cross-Site Scripting (XSS) via the 'rspcheck' shortcode. This flaw arises from inadequate input sanitization and output escaping within the 'url' and 'button' attributes in the rspc_check_shortcode() function. With this vulnerability, authenticated users who have contributor-level access or higher can inject malicious web scripts. These scripts execute when unsuspecting users access pages that incorporate the compromised shortcode, which can lead to the exploitation of user sessions and manipulation of web content.

Affected Version(s)

Responsive Check 0 <= 0.0.3

References

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

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

nail majdeddine
.