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CVE-2021-24280

26
FAUCET Score

CVE-2021-24280 describes a critical PHP object injection vulnerability affecting the Redirection for Contact Form 7 WordPress plugin prior to version 2.3.4. This flaw allows any authenticated user, including a subscriber, to inject arbitrary PHP objects via the import_from_debug AJAX action. With a CVSS score of 8.8 (HIGH), this vulnerability presents a significant risk, enabling high impact to confidentiality, integrity, and availability with low attack complexity and no user interaction required. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the high severity warrants immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.3.4CPE matchmatch criteria
cpe:2.3:a:querysol:redirection_for_contact_form_7:*:*:*:*:*: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
1.97%
Probability of exploitation in next 30 days
EPSS Percentile
78.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0197 is in the 77th percentile among its peer group of 17,844 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

wpscan.com / vulnerability/db4ba6b0-887e-4ec1-8935-ab21d369b329
ExploitVendor Advisory
wordfence.com / blog/2021/04/severe-vulnerabilities-patched-in-redirection-for-contact-form-7-plugin
ExploitVendor Advisory