CVE-2026-6439: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in jconti VideoZen
The VideoZen plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 1.0.1. This is due to insufficient input sanitization and output escaping in the videozen_conf() function. The 'lang' POST parameter is stored directly via update_option() without any sanitization, and later echoed inside a <textarea> element without applying esc_textarea() or any equivalent escaping function. This makes it possible for authenticated attackers with Administrator-level access and above to inject arbitrary web scripts into the plugin settings page that will execute whenever any user accesses that page.
AI Analysis
Technical Summary
CVE-2026-6439 is a stored XSS vulnerability in the VideoZen WordPress plugin (versions up to 1.0.1). The vulnerability arises because the 'lang' POST parameter is stored directly via update_option() without sanitization and echoed inside a <textarea> element without proper escaping (e.g., esc_textarea()). This flaw enables authenticated administrators or higher to inject arbitrary JavaScript into the plugin settings page, leading to script execution when the page is accessed.
Potential Impact
An attacker with Administrator-level access can inject malicious scripts into the plugin settings page, potentially leading to session hijacking, privilege escalation, or other attacks against users who visit that page. The CVSS score of 4.4 (medium severity) reflects limited attack vector (network), high attack complexity, and required privileges but no user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Administrators should restrict access to the plugin settings page to trusted users only and monitor for suspicious activity. Check the vendor's advisory regularly for updates or patches addressing this issue.
CVE-2026-6439: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in jconti VideoZen
Description
The VideoZen plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to and including 1.0.1. This is due to insufficient input sanitization and output escaping in the videozen_conf() function. The 'lang' POST parameter is stored directly via update_option() without any sanitization, and later echoed inside a <textarea> element without applying esc_textarea() or any equivalent escaping function. This makes it possible for authenticated attackers with Administrator-level access and above to inject arbitrary web scripts into the plugin settings page that will execute whenever any user accesses that page.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6439 is a stored XSS vulnerability in the VideoZen WordPress plugin (versions up to 1.0.1). The vulnerability arises because the 'lang' POST parameter is stored directly via update_option() without sanitization and echoed inside a <textarea> element without proper escaping (e.g., esc_textarea()). This flaw enables authenticated administrators or higher to inject arbitrary JavaScript into the plugin settings page, leading to script execution when the page is accessed.
Potential Impact
An attacker with Administrator-level access can inject malicious scripts into the plugin settings page, potentially leading to session hijacking, privilege escalation, or other attacks against users who visit that page. The CVSS score of 4.4 (medium severity) reflects limited attack vector (network), high attack complexity, and required privileges but no user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Administrators should restrict access to the plugin settings page to trusted users only and monitor for suspicious activity. Check the vendor's advisory regularly for updates or patches addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-04-16T18:09:59.771Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e1f70182d89c981fb0d49b
Added to database: 4/17/2026, 9:01:53 AM
Last enriched: 4/17/2026, 9:17:31 AM
Last updated: 4/17/2026, 11:13:22 AM
Views: 8
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