CVE-2026-7509
Received Received - Intake

Stored XSS in KIA Subtitle WordPress Plugin

Publication date: 2026-05-22

Last updated on: 2026-05-22

Assigner: Wordfence

Description
The KIA Subtitle plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `the-subtitle` shortcode `before` and `after` attributes in all versions up to, and including, 4.0.1. This is due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-05-22
Last Modified
2026-05-22
Generated
2026-07-02
AI Q&A
2026-05-22
EPSS Evaluated
2026-06-30
NVD
CVE-2026-7509
EUVD
EUVD-2026-31406

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
kc_subtitle subtitle to 4.0.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

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.

Impact Analysis

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.

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