Stored Cross-Site Scripting Vulnerability in Simple Owl Shortcodes Plugin for WordPress
CVE-2026-6255

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Simple Owl Shortcodes
Vendor
CVE Published:
5 May 2026

What is CVE-2026-6255?

The Simple Owl Shortcodes plugin for WordPress contains a vulnerability that allows authenticated users with contributor-level access and above to exploit Stored Cross-Site Scripting (XSS). This occurs through the 'num' attribute of the 'owls_wrapper' shortcode, where improper input sanitization and output escaping of user-supplied attributes can result in arbitrary web scripts being injected. When a user accesses a page containing such scripts, the malicious code executes, potentially compromising user data and site integrity.

Affected Version(s)

Simple Owl Shortcodes 0 <= 2.1.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/simple-owl-sho...
https://plugins.trac.wordpress.org/browser/simple-owl-sho...

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
.