Stored Cross-Site Scripting in Post Blocks & Tools Plugin for WordPress
CVE-2026-5711

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Post Blocks & Tools
Vendor
CVE Published:
8 April 2026

What is CVE-2026-5711?

The Post Blocks & Tools plugin for WordPress is susceptible to a Stored Cross-Site Scripting vulnerability due to inadequate input sanitization and output escaping for the 'sliderStyle' block attribute. Authenticated users with author-level access can exploit this weakness to inject arbitrary web scripts into pages. When a user accesses an affected page, these scripts will execute, potentially compromising the security of affected sites.

Affected Version(s)

Post Blocks & Tools 0 <= 1.3.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/bnm-blocks/tag...
https://plugins.trac.wordpress.org/browser/bnm-blocks/tru...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Athiwat Tiprasaharn
.