LWS Optimize – All-in-One Speed Booster & Cache Tools vulnerabilities
Plugin slug lws-optimize · 5 known vulnerabilities · latest disclosed 2026-08-04 · WordPress.org page
Every listed vulnerability has a fix. Version 4.1.2 or later is not affected by any of them. If your site runs an older version, update it.
2 of 5 rated high or critical (CVSS 7 or more).
Known vulnerabilities in LWS Optimize – All-in-One Speed Booster & Cache Tools
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| High 7.2 | <= 4.1.1 | 4.1.2 | CVE-2026-16032 | 2026-08-04 | Advisory |
| Medium 4.3 | < 3.4 | 3.4 | CVE-2026-16042 | 2026-08-02 | Advisory |
| Medium 4.9 | <= 3.3.19 | 3.3.20 | CVE-2026-12089 | 2026-06-12 | Advisory |
| Medium 4.3 | <= 1.9.1 | 2.0 | CVE-2024-30541 | 2024-03-29 | Advisory |
| High 8.8 | <= 1.5 | 1.6 | none | 2022-12-12 | Advisory |
Check if a site is affected
Enter a site address to see which version of LWS Optimize – All-in-One Speed Booster & Cache Tools and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the LWS Optimize – All-in-One Speed Booster & Cache Tools plugin safe to use?
All 5 known issues are fixed in current versions (4.1.2 or later). Keeping it updated is what matters.
How do I check which version of LWS Optimize – All-in-One Speed Booster & Cache Tools 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.