WP Maintenance Mode & Site Under Construction vulnerabilities
Plugin slug wp-maintenance-mode-site-under-construction · 5 known vulnerabilities · latest disclosed 2025-06-05 · WordPress.org page
Every listed vulnerability has a fix. Version 4.4 or later is not affected by any of them. If your site runs an older version, update it.
4 of 5 rated high or critical (CVSS 7 or more).
Known vulnerabilities in WP Maintenance Mode & Site Under Construction
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 4.3 | <= 4.3 | 4.4 | CVE-2025-49284 | 2025-06-05 | Advisory |
| High 8.8 | <= 1.5.2 | 1.6 | none | 2021-04-22 | Advisory |
| High 8.8 | < 1.5.2 | 1.5.2 | CVE-2021-24190 | 2021-04-22 | Advisory |
| High 8.8 | < 1.8.2 | 1.8.2 | CVE-2021-24191 | 2021-04-22 | Advisory |
| High 8.8 | <= 1.8.2 | 1.9 | none | 2021-04-22 | Advisory |
Check if a site is affected
Enter a site address to see which version of WP Maintenance Mode & Site Under Construction and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the WP Maintenance Mode & Site Under Construction plugin safe to use?
All 5 known issues are fixed in current versions (4.4 or later). Keeping it updated is what matters.
How do I check which version of WP Maintenance Mode & Site Under Construction 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.