CoolClock vulnerabilities
Plugin slug coolclock · 3 known vulnerabilities · latest disclosed 2026-09-11 · WordPress.org page
Every listed vulnerability has a fix. Version 4.3.8 or later is not affected by any of them. If your site runs an older version, update it.
0 of 3 rated high or critical (CVSS 7 or more).
Known vulnerabilities in CoolClock
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 6.4 | < 4.3.8 | 4.3.8 | CVE-2026-83545 | 2026-09-11 | Advisory |
| Medium 6.4 | <= 4.3.7 | 4.3.8 | CVE-2026-83546 | 2026-09-08 | Advisory |
| Medium 5.4 | < 4.3.5 | 4.3.5 | CVE-2021-24670 | 2021-08-30 | Advisory |
Check if a site is affected
Enter a site address to see which version of CoolClock and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the CoolClock plugin safe to use?
All 3 known issues are fixed in current versions (4.3.8 or later). Keeping it updated is what matters.
How do I check which version of CoolClock 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.