WordPress plugin
ICS Calendar security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 4 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical0
- High2
- Medium2
- Low0
All ICS Calendar vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤12.1.1Update to 12.1.1.1 | CVE-2026-59516 | |
| Medium6.1 | Reflected Cross-Site Scripting via 'htmltagtitle' Parameter ≤12.0.9Update to 12.0.9.2 | CVE-2026-9838 | |
| High8.8 | Authenticated (Contributor+) Arbitrary File Read and Server-Side Request Forgery ≤10.12.0.2Update to 10.12.0.3 | CVE-2023-46784 | |
| Medium6.5 | Authenticated(Contributor+) Directory Traversal via _url_get_contents <10.12.0.2Update to 10.12.0.2 | — |
- High7.2Unauthenticated Stored Cross-Site Scripting
≤12.1.1Update to 12.1.1.1
- Medium6.1Reflected Cross-Site Scripting via 'htmltagtitle' Parameter
≤12.0.9Update to 12.0.9.2
- High8.8Authenticated (Contributor+) Arbitrary File Read and Server-Side Request Forgery
≤10.12.0.2Update to 10.12.0.3
- Medium6.5Authenticated(Contributor+) Directory Traversal via _url_get_contents
<10.12.0.2Update to 10.12.0.2
ICS Calendar: common questions
Does ICS Calendar have known vulnerabilities?
Yes. VulnCrest Radar lists 4 known vulnerabilities in ICS Calendar: 2 high, 2 medium. None are known to affect version null.
How do I check which version of ICS 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 ICS Calendar vulnerability?
CVE-2026-59516, published Jul 10, 2026: ICS Calendar <= 12.1.1 - Unauthenticated Stored Cross-Site Scripting. Severity: High (CVSS 7.2).
Is any ICS Calendar vulnerability listed in CISA KEV?
No. None of the known ICS Calendar vulnerabilities is currently listed in the CISA KEV catalog.