Cross-site Scripting Vulnerability in B Blocks by bPlugins
CVE-2026-104400

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
B Blocks
Vendor
CVE Published:
5 October 2026

What is CVE-2026-104400?

The B Blocks plugin by bPlugins is susceptible to a Cross-site Scripting (XSS) vulnerability due to improper neutralization of user input during web page generation. This oversight enables attackers to inject malicious scripts that could be stored and executed in the browsers of users accessing the affected site. This vulnerability impacts versions of B Blocks up to 2.1.8 and poses a significant risk to web application security, requiring immediate attention for patches and updates.

Affected Version(s)

B Blocks 0 <= 2.1.8

References

https://patchstack.com/database/wordpress/plugin/b-blocks...
vdb-entry

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

V1T | Patchstack Bug Bounty Program
.