CVE-2026-57423

WordPress Message Filter for Contact Form 7 plugin <= 1.6.3.8 - Reflected Cross Site Scripting (XSS) vulnerability

7.1 High

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kofi Mokome Message Filter for Contact Form 7 cf7-message-filter allows Reflected XSS.This issue affects Message Filter for Contact Form 7: from n/a through <= 1.6.3.8.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.25%Unchanged since Jul 13, 2026

What each source reports

CVE List Score used 7.1

WordPress Message Filter for Contact Form 7 plugin <= 1.6.3.8 - Reflected Cross Site Scripting (XSS) vulnerability

Record: CVE-2026-57423
CVSS 3.1: 7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2026-43350 7.1

Record: EUVD-2026-43350
CVSS 3.1: 7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-xc3q-vv64-34jj 7.1

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')...

Record: GHSA-xc3q-vv64-34jj
CVSS 3.1: 7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

NVD 7.1

Record: CVE-2026-57423
CVSS 3.1: 7.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
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-2026-57423 is a high vulnerability (CVSS 7.1) in Kofi Mokome Message Filter For Contact Form 7, published July 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. No source names a fixed version.