Privilege Escalation Vulnerability in B Blocks Plugin for WordPress
CVE-2025-8059

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
B Blocks – The Ultimate Block Collection
Vendor
CVE Published:
12 August 2025

What is CVE-2025-8059?

The B Blocks plugin for WordPress has a vulnerability that allows unauthorized users to escalate privileges due to missing authorization checks and flawed input validation in the rgfr_registration() function. As a result, unauthenticated attackers can create new accounts with the administrator role, posing a significant security threat. This issue affects all plugin versions up to and including 2.0.6, potentially compromising site integrity and management.

Affected Version(s)

B Blocks – The ultimate block collection * <= 2.0.6

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/b-blocks/trunk...
https://wordpress.org/plugins/b-blocks/#developers

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Peter Thaleikis
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CVE-2025-8059 : Privilege Escalation Vulnerability in B Blocks Plugin for WordPress