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.
Metrics
Affected Vendors & Products
References
History
Sun, 17 May 2026 20:30:00 +0000
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Kcseopro
Kcseopro wp Seo Structured Data Schema Wordpress Wordpress wordpress |
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Kcseopro
Kcseopro wp Seo Structured Data Schema Wordpress Wordpress wordpress |
Tue, 12 May 2026 14:15:00 +0000
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ssvc
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Tue, 12 May 2026 08:30:00 +0000
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| 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. | |
| Title | WP SEO Structured Data Schema <= 2.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via '_kcseo_ative_tab' Parameter | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published: 2026-05-12T07:48:19.050Z
Updated: 2026-05-12T12:45:06.844Z
Reserved: 2026-03-05T15:22:24.895Z
Link: CVE-2026-3604
Updated: 2026-05-12T12:44:59.881Z
Status : Deferred
Published: 2026-05-12T09:16:40.810
Modified: 2026-05-12T14:03:52.757
Link: CVE-2026-3604
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