WordPress plugin
Advanced Custom CSS 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
- Medium1
- Low0
All Advanced Custom CSS vulnerabilities
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Advanced Custom CSS: common questions
Does Advanced Custom CSS have known vulnerabilities?
Yes. VulnCrest Radar lists 1 known vulnerability in Advanced Custom CSS: 1 medium. At least one is not fixed in the latest version.
How do I check which version of Advanced Custom CSS 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 Advanced Custom CSS vulnerability?
CVE-2025-68878, published Dec 26, 2025: Advanced Custom CSS <= 1.1.0 - Reflected Cross-Site Scripting. Severity: Medium (CVSS 6.1).
Is any Advanced Custom CSS vulnerability listed in CISA KEV?
No. None of the known Advanced Custom CSS vulnerabilities is currently listed in the CISA KEV catalog.