MEDIUM SeverityCVSS 3.14.9CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

CVE-2026-3604

Last updated May 12, 2026 · Published May 12, 2026

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.

Affected products

1 listed

kcseopro:WP SEO Structured Data Schema

Mappings

CWE

CWE-79

CAPEC

None listed.

Research

Cross-Site Scripting (XSS)Covers reflected, stored, and DOM based XSS risks and why they remain high impact. Provides prevention…

Training

XSS in React, Vue and Server ComponentsCross-site scripting in modern component frameworks and how to prevent it.

CVE-2026-3604

Description

Affected products

Mappings

Related