CVE-2026-14827
Medium
Description
The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.
SeverityMedium
CVSS6.8
Exploit probability—
ProductCalendar
PublishedJul 27, 2026
First seenJul 27, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Calendar1.3.18 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Calendar | v < 1.3.18 | 1.3.18 |
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