CVE-2026-1395: Gutentools

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

The Gutentools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Post Slider block's block_id attribute in all versions up to, and including, 1.1.3. This is due to insufficient input sanitization and output escaping combined with a custom unescaping routine that reintroduces dangerous characters. 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

Published 2026-04-22. Last modified 2026-06-17.