CVE-2026-7509
Stored XSS in KIA Subtitle WordPress Plugin
Publication date: 2026-05-22
Last updated on: 2026-05-22
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| kc_subtitle | subtitle | to 4.0.1 (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 vulnerability exists in the KIA Subtitle plugin for WordPress, specifically in the `the-subtitle` shortcode's `before` and `after` attributes. It is a Stored Cross-Site Scripting (XSS) flaw caused by insufficient input sanitization and output escaping of user-supplied attributes. Authenticated users with Contributor-level access or higher can inject malicious scripts into pages, which then execute whenever any user views those pages.
How can this vulnerability impact me? :
This vulnerability allows attackers with Contributor-level access or above to inject arbitrary web scripts into WordPress pages. These scripts execute in the browsers of users who visit the affected pages, potentially leading to unauthorized actions such as stealing session cookies, defacing content, or redirecting users to malicious sites. The impact includes loss of data integrity and confidentiality, as well as a compromised user experience.