WordPress plugin
XO Event Calendar security & vulnerabilities
Unpatched vulnerability in the latest version
At least one vulnerability affects the latest version and no fix has been released. Deactivate the plugin or restrict access to the affected feature until the vendor ships a patch.
- Critical0
- High0
- Medium2
- Low0
All XO Event Calendar vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via 'xo_event_field' shortcode ≤3.2.10No patch available | CVE-2026-0556 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.3.6Update to 2.3.7 | — |
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'xo_event_field' shortcode
≤3.2.10No patch available
- Medium6.1Reflected Cross-Site Scripting
≤2.3.6Update to 2.3.7
XO Event Calendar: common questions
Does XO Event Calendar have known vulnerabilities?
Yes. VulnCrest Radar lists 2 known vulnerabilities in XO Event Calendar: 2 medium. At least one is not fixed in the latest version.
How do I check which version of XO Event Calendar I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent XO Event Calendar vulnerability?
CVE-2026-0556, published Feb 18, 2026: XO Event Calendar <= 3.2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'xo_event_field' shortcode. Severity: Medium (CVSS 6.4).
Is any XO Event Calendar vulnerability listed in CISA KEV?
No. None of the known XO Event Calendar vulnerabilities is currently listed in the CISA KEV catalog.