What’s Vulnerable › Vulnerabilities
CVE-2021-4363: WP Quick FrontEnd Editor <= 5.5 - Reflected Cross-Site Scripting
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2023-06-07 · updated 2026-06-17
- Weakness: CWE-79
Description
The WP Quick FrontEnd Editor plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 5.5 due to insufficient input sanitization and output escaping on the 'save_content_front' function that uses print_r on the user-supplied $_REQUEST values . This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Affected products
References
- https://blog.nintechnet.com/multiple-vulnerabilities-in-wordpress-wp-quick-frontend-editor-plugin-unpatched/
- https://wordpress.org/plugins/wp-quick-front-end-editor/#developers
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7ce8ae7d-c2a5-4da3-8bdd-20dfdb5ce700?source=cve
- https://blog.nintechnet.com/multiple-vulnerabilities-in-wordpress-wp-quick-frontend-editor-plugin-unpatched/
- https://wordpress.org/plugins/wp-quick-front-end-editor/#developers
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7ce8ae7d-c2a5-4da3-8bdd-20dfdb5ce700?source=cve
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