---
id: CVE-2026-7509
title: >-
  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
summary: >-
  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 s…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-05-22'
updated: '2026-07-23'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-7509'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/kia-subtitle/tags/4.0.1/kia-subtitle.php#L329
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kia-subtitle/tags/4.0.1/kia-subtitle.php#L359
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kia-subtitle/tags/4.0.2/kia-subtitle.php#L369
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kia-subtitle/tags/4.0.2/kia-subtitle.php#L370
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kia-subtitle/trunk/kia-subtitle.php#L329
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/kia-subtitle/trunk/kia-subtitle.php#L359
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/a9a52097-0d85-4036-9b74-f35fea549607?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00349
epssPercentile: 0.2592
ingestedAt: '2026-07-23T11:17:34.004Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.