CVE-2025-9277: Softaculous Siteseo – Seo Simplified

Medium severity, CVSS 6.4. EPSS: 0.2% chance of exploitation in the next 30 days.

The SiteSEO – SEO Simplified plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the broken preg_replace expression in all versions up to, and including, 1.2.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• Softaculous Siteseo – Seo Simplified: up to and including 1.2.7

Published 2025-08-26. Last modified 2026-06-17.