CVE-2026-6255
Stored XSS in Simple Owl Shortcodes WordPress Plugin
Publication date: 2026-05-05
Last updated on: 2026-05-05
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| simple_owl | shortcodes | to 2.1.1 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The Simple Owl Shortcodes plugin for WordPress has a vulnerability known as Stored Cross-Site Scripting (XSS) in its 'owls_wrapper' shortcode, specifically via the 'num' attribute. This vulnerability exists in all versions up to and including 2.1.1. It occurs because the plugin does not properly sanitize or escape user-supplied input for this attribute.
As a result, authenticated users with contributor-level access or higher can inject malicious scripts into pages. These scripts will then execute whenever any user views the affected page.
How can this vulnerability impact me? :
This vulnerability allows attackers with contributor-level access or above to inject arbitrary web scripts into pages on a WordPress site using the Simple Owl Shortcodes plugin. When other users access these pages, the malicious scripts execute in their browsers.
The impact includes potential theft of user credentials, session hijacking, defacement of the website, or distribution of malware. Since the vulnerability requires authenticated access, it primarily threatens sites where multiple users have contributor or higher privileges.