What is CVE-2021-4363?

CVE-2021-4363 is a medium-severity vulnerability in Labibahmed42 Wp Quick Frontend Editor – Wordpress Plugin, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-06-07.

How severe is CVE-2021-4363?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-4363 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Labibahmed42 Wp Quick Frontend Editor – Wordpress Plugin

CVE-2021-4363

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (51.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

security@wordfence.com (Third Party Advisory)
security@wordfence.com (Product)
security@wordfence.com (Exploit)

Frequently asked questions

What is CVE-2021-4363?: CVE-2021-4363 is a medium-severity vulnerability in Labibahmed42 Wp Quick Frontend Editor – Wordpress Plugin, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-06-07.
How severe is CVE-2021-4363?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-4363 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.