ICS Calendar vulnerabilities
Plugin slug ics-calendar · 4 known vulnerabilities · latest disclosed 2026-07-10 · WordPress.org page
Every listed vulnerability has a fix. Version 12.1.1.1 or later is not affected by any of them. If your site runs an older version, update it.
2 of 4 rated high or critical (CVSS 7 or more).
Known vulnerabilities in ICS Calendar
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| High 7.2 | <= 12.1.1 | 12.1.1.1 | CVE-2026-59516 | 2026-07-10 | Advisory |
| Medium 6.1 | <= 12.0.9 | 12.0.9.2 | CVE-2026-9838 | 2026-07-09 | Advisory |
| High 8.8 | <= 10.12.0.2 | 10.12.0.3 | CVE-2023-46784 | 2023-10-26 | Advisory |
| Medium 6.5 | < 10.12.0.2 | 10.12.0.2 | CVE-2023-46784 | 2023-10-23 | Advisory |
Check if a site is affected
Enter a site address to see which version of ICS Calendar and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the ICS Calendar plugin safe to use?
All 4 known issues are fixed in current versions (12.1.1.1 or later). Keeping it updated is what matters.
How do I check which version of ICS Calendar 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.