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CVE-2021-24224

27
FAUCET Score

CVE-2021-24224 describes an arbitrary file upload vulnerability in the Easy Form Builder WordPress plugin (versions through 1.0). Authenticated users, even those with low privileges, can exploit the EFBP_verify_upload_file AJAX action to upload malicious files due to a lack of security checks. This flaw carries a CVSS score of 8.8 (High), indicating a critical risk of Remote Code Execution (RCE) with low attack complexity and no user interaction required. While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0CPE matchmatch criteria
cpe:2.3:a:easy-form-builder-by-bitware_project:easy-form-builder-by-bitware:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
1.91%
Probability of exploitation in next 30 days
EPSS Percentile
77.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0191 is in the 76th percentile among its peer group of 17,823 CVEs.

Social Chatter

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

Remediation

Remediation records are not available for this CVE.

References

github.com / jinhuang1102/CVE-ID-Reports/blob/e4c33529b20fa70e3a764ff9b1125839fb9900b5/Easy%20Form%20Builder.md
ExploitThird Party Advisory
wpscan.com / vulnerability/ed0c054b-54bf-4df8-9015-c76704c93484
Third Party Advisory