Message Filter for Contact Form 7 vulnerabilities
Plugin slug cf7-message-filter · 9 known vulnerabilities · latest disclosed 2026-07-27 · WordPress.org page
Every listed vulnerability has a fix. Version 1.6.33 or later is not affected by any of them. If your site runs an older version, update it.
1 of 9 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Message Filter for Contact Form 7
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| High 7.2 | <= 1.6.3.9 | 1.6.4.0 | CVE-2026-65438 | 2026-07-27 | Advisory |
| Medium 6.1 | <= 1.6.3.8 | 1.6.3.9 | CVE-2026-57423 | 2026-07-08 | Advisory |
| Medium 6.1 | <= 1.6.3.2 | 1.6.3.3 | CVE-2024-13362 | 2026-04-30 | Advisory |
| Medium 4.9 | <= 1.6.3.2 | 1.6.33 | CVE-2025-46252 | 2025-04-22 | Advisory |
| Medium 4.3 | <= 1.6.3 | 1.6.3.1 | CVE-2024-12026 | 2024-12-06 | Advisory |
| Medium 4.3 | <= 1.6.3 | 1.6.3.1 | CVE-2024-12027 | 2024-12-05 | Advisory |
| Medium 4.3 | <= 1.6.3 | 1.6.3.1 | CVE-2024-54254 | 2024-12-05 | Advisory |
| Medium 6.1 | <= 1.6.1.1 | 1.6.2 | CVE-2024-39647 | 2024-08-01 | Advisory |
| Medium 6.1 | <= 1.4.2 | 1.4.3 | CVE-2023-33999 | 2023-07-18 | Advisory |
Check if a site is affected
Enter a site address to see which version of Message Filter for Contact Form 7 and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the Message Filter for Contact Form 7 plugin safe to use?
All 9 known issues are fixed in current versions (1.6.33 or later). Keeping it updated is what matters.
How do I check which version of Message Filter for Contact Form 7 my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.