Security Advisory

CVE-2026-3604

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-12 07:48:19

Last updated 2026-05-12 12:45:06

Assigner Wordfence

CVSS score 4.9

State PUBLISHED

Description

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. 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.

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