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CVE-2021-4402

16
FAUCET Score

CVE-2021-4402 describes a Cross-Site Request Forgery (CSRF) vulnerability in the Multiple Roles plugin for WordPress, affecting versions up to and including 1.3.1. This flaw stems from insufficient nonce validation in specific functions, allowing unauthenticated attackers to add additional roles to users. The vulnerability has a CVSS score of 4.3 (Medium), indicating a low attack complexity but requiring user interaction from an administrator to trigger the exploit, with a potential impact of unauthorized role modification. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.3.1CPE matchmatch criteria
cpe:2.3:a:multiple_roles_project:multiple_roles:*:*:*:*:*: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
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 35th percentile among its peer group of 26,219 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
Not Applicable
blog.nintechnet.com / more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks
Not Applicable
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1
Not Applicable
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
Not Applicable
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4
Not Applicable
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5
Not Applicable
plugins.trac.wordpress.org / changeset
Patch
wordfence.com / threat-intel/vulnerabilities/id/862fa0c3-c16f-493e-9bf6-92debc0e30f6
Third Party Advisory