CVE-2023-40609

WordPress Contact form 7 Custom validation Plugin <= 1.1.3 is vulnerable to SQL Injection

8.2 High

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Aiyaz, maheshpatel Contact form 7 Custom validation allows SQL Injection.This issue affects Contact form 7 Custom validation: from n/a through 1.1.3.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: Low

Exploit likelihood

0.70%Up 0.7 points since Nov 6, 2023

What each source reports

CVE List Score used 8.2

WordPress Contact form 7 Custom validation Plugin <= 1.1.3 is vulnerable to SQL Injection

Record: CVE-2023-40609
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Weakness: CWE-89
Updated: 2026-11-02

EUVDEUVD-2023-45167 8.2

Record: EUVD-2023-45167
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-rq4x-9q74-vqwc 9.8

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')...

Record: GHSA-rq4x-9q74-vqwc
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-89
Updated: 2026-11-02

NVD 8.2

Record: CVE-2023-40609
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-89
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-40609 is a high vulnerability (CVSS 8.2) in Aiyaz, Maheshpatel Contact Form 7 Custom Validation, published November 6, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.70%, the 53rd percentile. No source names a fixed version.