Live CSS Preview: A security weakness
Live CSS Preview is affected by a security weakness. Exploitation requires at least subscriber-level access. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- Live CSS Preview
- Plugin slug
live-css-preview- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Dec 05, 2025
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Dec 05, 2025 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update Live CSS Preview to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Live CSS Preview plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'wp_ajax_frontend_save' AJAX endpoint in all versions up to, and including, 2.1.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update the plugin's css setting.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N