Classic
Classic has one disclosed vulnerability in the WordSec catalog, all reported in 2007; it is fixed as of September 2026. Their average CVSS score is 6.1, and the most serious one scores 6.1 out of 10.
The most common weakness is Cross-Site Scripting, behind 1 of the records (100%).
The one issue recorded for Classic has a vendor fix available, so running the current release closes it.
All of these findings were reported by Eugene Dokukin. Classic is installed on roughly 1,000 WordPress sites, so each unpatched flaw has a wide blast radius. The upstream project has not shipped an update in about 3 years, so new fixes are unlikely to arrive on their own.
CVE-2007-4483Classic <= 1.5 - Cross-Site Scripting
Read the full analysisVulnerability Records

Classic
Author
WordPress.org
The original WordPress theme that graced versions 1.2.x and prior.
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C