Vulnerability Description
The Post Blocks & Tools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sliderStyle' block attribute in the Posts Slider block in all versions up to, and including, 1.3.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with author-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/bnm-blocks/tags/1.3.0/src/blocks/post
- https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.1/src/blocks/post
- https://plugins.trac.wordpress.org/browser/bnm-blocks/trunk/src/blocks/posts/sli
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new
- https://www.wordfence.com/threat-intel/vulnerabilities/id/aeada6dc-0851-45e8-ada
FAQ
What is CVE-2026-5711?
CVE-2026-5711 is a vulnerability with a CVSS score of 6.4 (MEDIUM). The Post Blocks & Tools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sliderStyle' block attribute in the Posts Slider block in all versions up to, and including, 1.3.0 du...
How severe is CVE-2026-5711?
CVE-2026-5711 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-2026-5711?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.