CVE-2026-7509: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in helgatheviking KIA Subtitle
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.
AI Analysis
Technical Summary
CVE-2026-7509 is a stored cross-site scripting vulnerability in the KIA Subtitle WordPress plugin (versions up to 4.0.1). The issue occurs because the plugin does not properly sanitize or escape the `before` and `after` attributes of the `the-subtitle` shortcode. This allows authenticated users with Contributor or higher privileges to inject arbitrary JavaScript code that executes in the context of users viewing the affected pages. The vulnerability has a CVSS 3.1 score of 6.4, reflecting a medium impact on confidentiality and integrity but no impact on availability. No official fix or patch has been disclosed by the vendor as of the publication date.
Potential Impact
An attacker with Contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode attributes. This can lead to unauthorized actions performed in the context of other users, potentially compromising user data confidentiality and integrity. There is no direct impact on system availability. The vulnerability requires authenticated access, limiting the attack surface to users with some level of trust within the WordPress site.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, site administrators should restrict Contributor-level access to trusted users only and consider disabling or removing the KIA Subtitle plugin if possible. Monitoring for unusual shortcode usage or unexpected script injections may help detect exploitation attempts.
CVE-2026-7509: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in helgatheviking KIA Subtitle
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-7509 is a stored cross-site scripting vulnerability in the KIA Subtitle WordPress plugin (versions up to 4.0.1). The issue occurs because the plugin does not properly sanitize or escape the `before` and `after` attributes of the `the-subtitle` shortcode. This allows authenticated users with Contributor or higher privileges to inject arbitrary JavaScript code that executes in the context of users viewing the affected pages. The vulnerability has a CVSS 3.1 score of 6.4, reflecting a medium impact on confidentiality and integrity but no impact on availability. No official fix or patch has been disclosed by the vendor as of the publication date.
Potential Impact
An attacker with Contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable shortcode attributes. This can lead to unauthorized actions performed in the context of other users, potentially compromising user data confidentiality and integrity. There is no direct impact on system availability. The vulnerability requires authenticated access, limiting the attack surface to users with some level of trust within the WordPress site.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, site administrators should restrict Contributor-level access to trusted users only and consider disabling or removing the KIA Subtitle plugin if possible. Monitoring for unusual shortcode usage or unexpected script injections may help detect exploitation attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-30T15:05:30.264Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0fe2c7e1370fbb4890d7d1
Added to database: 5/22/2026, 4:59:51 AM
Last enriched: 5/22/2026, 5:15:07 AM
Last updated: 5/23/2026, 6:15:33 PM
Views: 23
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