Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-39353

27
FAUCET Score

CVE-2021-39353 describes a Cross-Site Request Forgery (CSRF) vulnerability in the Easy Registration Forms WordPress plugin, affecting versions up to and including 2.1.1. This flaw, stemming from missing nonce validation in the ajax_add_form function, allows attackers to inject arbitrary web scripts. With a CVSS score of 8.8 (High), this vulnerability presents a significant risk, requiring user interaction but potentially leading to high impact on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.1.1CPE matchmatch criteria
cpe:2.3:a:easyregistrationforms:easy_registration_forms:*:*:*:*:*:wordpress:*:*
>= 2.1.1, <= 2.1.1CPE match
cpe:2.3:a:easyregistrationforms:easy_registration_forms:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 51st percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/easy-registration-forms/tags/2.1.1/includes/class-form.php
Third Party Advisory
wordfence.com / vulnerability-advisories
Third Party Advisory