CVE-2023-40609

FAUCET Score

CVE-2023-40609 is a critical SQL Injection vulnerability (CWE-89) affecting the Contact Form 7 Custom Validation plugin, versions up to and including 1.1.3. This flaw allows unauthenticated attackers to execute arbitrary SQL commands, leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been confirmed, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		1.1.3CPE matchmatch criteria	cpe:2.3:a:rocklobster:contact_form_7_custom_validation:1.1.3:::::wordpress::

CVSS Data

CVSS version used by this source: 3.1

8.2HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

LOW

Exploitability Score

3.9

Impact Score

4.2

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.57%

Probability of exploitation in next 30 days

EPSS Percentile

43.6%

Percentile rank of EPSS score among Peer Group

As of 2026-07-26

Model: v2026.06.15

This CVE's current EPSS score of 0.0057 is in the 23rd percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

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

Remediation

Remediation records are not available for this CVE.

References

patchstack.com / database/vulnerability/cf7-field-validation/wordpress-contact-form-7-custom-validation-plugin-1-1-3-unauth-sql-injection-vulnerability

Third Party Advisory