Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/gutentools/tags/1.1.3/core/blocks/pos
- https://plugins.trac.wordpress.org/browser/gutentools/trunk/core/blocks/post-sli
- https://plugins.trac.wordpress.org/browser/gutentools/trunk/core/gutentools_bloc
- https://plugins.trac.wordpress.org/changeset/3476597/gutentools/trunk/core/block
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b2683b4e-b993-4c84-b7c
FAQ
What is CVE-2026-1395?
CVE-2026-1395 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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...
How severe is CVE-2026-1395?
CVE-2026-1395 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1395?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.