Asset CleanUp: Page Speed Booster vulnerabilities
Plugin slug wp-asset-clean-up · 11 known vulnerabilities · latest disclosed 2026-09-24 · WordPress.org page
Every listed vulnerability has a fix. Version 1.4.0.6 or later is not affected by any of them. If your site runs an older version, update it.
1 of 11 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Asset CleanUp: Page Speed Booster
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 5.5 | <= 1.4.0.5 | 1.4.0.6 | CVE-2026-12037 | 2026-09-24 | Advisory |
| High 7.2 | <= 1.4.0.5 | 1.4.0.6 | CVE-2026-13354 | 2026-09-18 | Advisory |
| Medium 4.3 | <= 1.4.0.5 | 1.4.0.6 | CVE-2026-66571 | 2026-09-17 | Advisory |
| Medium 5.3 | <= 1.4.0.3 | 1.4.0.4 | CVE-2026-45212 | 2026-03-07 | Advisory |
| Medium 5.5 | <= 1.3.9.8 | 1.3.9.9 | CVE-2024-53738 | 2024-11-27 | Advisory |
| Medium 4.3 | <= 1.3.9.3 | 1.3.9.4 | CVE-2024-43314 | 2024-08-16 | Advisory |
| Medium 6.1 | <= 1.3.5.4 | 1.3.5.5 | CVE-2023-33999 | 2023-07-18 | Advisory |
| Medium 6.1 | <= 1.3.8.4 | 1.3.8.5 | CVE-2021-36899 | 2022-09-28 | Advisory |
| Medium 6.1 | < 1.3.8.5 | 1.3.8.5 | CVE-2021-24983 | 2022-01-03 | Advisory |
| Medium 6.1 | <= 1.3.8.4 | 1.3.8.5 | CVE-2021-24937 | 2022-01-03 | Advisory |
| Medium 6.1 | < 1.3.6.7 | 1.3.6.7 | none | 2015-04-20 | Advisory |
Check if a site is affected
Enter a site address to see which version of Asset CleanUp: Page Speed Booster and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the Asset CleanUp: Page Speed Booster plugin safe to use?
All 11 known issues are fixed in current versions (1.4.0.6 or later). Keeping it updated is what matters.
How do I check which version of Asset CleanUp: Page Speed Booster 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.