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CVE-2021-4386

16
FAUCET Score

CVE-2021-4386 describes a Cross-Site Request Forgery (CSRF) vulnerability in the WP Security Question plugin for WordPress, affecting versions up to and including 1.0.5. This flaw stems from inadequate nonce validation in the plugin's save() function. An unauthenticated attacker could exploit this by tricking a site administrator into clicking a malicious link, leading to unauthorized modification of the plugin's settings. The vulnerability has a CVSS score of 4.3 (Medium), indicating a low attack complexity and requiring user interaction, but with a potential impact of low integrity. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting a low level of public awareness.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.5CPE matchmatch criteria
cpe:2.3:a:flippercode:wp-security-questions:*:*:*:*:*:wordpress:*:*
>= 0, <= 1.0.5CPE match
cpe:2.3:a:flippercode:wp_security_question:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
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
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 32nd percentile among its peer group of 26,221 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 0.1 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 / 25-wordpress-plugins-vulnerable-to-csrf-attacks
Third Party Advisory
blog.nintechnet.com / more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks
Third Party Advisory
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1
Third Party Advisory
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2
Third Party Advisory
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3
Third Party Advisory
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4
Third Party Advisory
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5
Third Party Advisory
plugins.trac.wordpress.org / browser/wp-security-questions/trunk/modules/settings/model.settings.php
Not Applicable
wordfence.com / threat-intel/vulnerabilities/id/23f9d758-4b5e-44e5-9f58-a37b01c4ffdb
Third Party Advisory