CVE-2021-4378

MEDIUM 6.4

WP Quick FrontEnd Editor <= 5.5 - Authenticated (Subscriber+) Stored Cross-Site Scripting

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

The WP Quick FrontEnd Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 5.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with minimal permissions like subscribers, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CWE	CWE-79
Vendor	labibahmed42
Product	wp quick frontend editor – wordpress plugin
Published	Jun 7, 2023
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

labibahmed42 / WP Quick FrontEnd Editor – WordPress Plugin

0 ≤ 5.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/ed137706-1313-4bff-882b-13d9fa11498c?source=cve blog.nintechnet.com: https://blog.nintechnet.com/multiple-vulnerabilities-in-wordpress-wp-quick-frontend-editor-plugin-unpatched/

Credits

Jerome Bruandet