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CVE-2021-4371

16
FAUCET Score

CVE-2021-4371 affects the WP Quick FrontEnd Editor plugin for WordPress, specifically versions up to and including 5.5. This vulnerability allows low-authenticated users to alter plugin settings without proper authorization due to missing security nonces and capability checks. Rated with a CVSS score of 4.3 (Medium), the flaw has a low attack complexity and could lead to unauthorized modification of plugin configurations. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.5CPE matchmatch criteria
cpe:2.3:a:pluginmirror:wp_quick_frontend_editor:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
48.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 58th percentile among its peer group of 21,957 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.nintechnet.com / multiple-vulnerabilities-in-wordpress-wp-quick-frontend-editor-plugin-unpatched
Exploit
wordpress.org / plugins/wp-quick-front-end-editor
Product
wordfence.com / threat-intel/vulnerabilities/id/c392750b-ae4a-48b5-9ccb-43852fb13e27
Third Party Advisory