XSS in Kcseopro Wp Seo Structured Data Schema
CVE-2026-3604
The WP SEO Structured Data Schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `_kcseo_ative_tab` parameter in all versions up to, and including, 2.8.1 due to insufficient input sanitization and output escaping…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (11.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Kcseopro Wp Seo Structured Data Schema — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-3604?
- CVE-2026-3604 is a medium-severity vulnerability in Kcseopro Wp Seo Structured Data Schema, classified under Cross-site Scripting. CVSS score: 4.9/10. Published 2026-05-12.
- How severe is CVE-2026-3604?
- Medium severity. CVSS v3 base score is 4.9 out of 10.