---
id: CVE-2026-104400
title: >-
  Improper Neutralization of Input During Web Page Generation ('Cross-site
  Scripting') vulnerability in bPlugins B Blocks b-blocks allows Stored XSS.This
  issue affects B Blocks: from n/a through 2.1.8.
summary: >-
  Improper Neutralization of Input During Web Page Generation ('Cross-site
  Scripting') vulnerability in bPlugins B Blocks b-blocks allows Stored XSS.This
  issue affects B Blocks: from n/a through 2.1.8.
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L'
cwe:
  - CWE-79
vendor: bPlugins
product: b-blocks
affected:
  - b-blocks <= 2.1.8
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T09:17:08.067'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104400'
references:
  - url: >-
      https://patchstack.com/database/wordpress/plugin/b-blocks/vulnerability/wordpress-b-blocks-plugin-2-1-8-cross-site-scripting-xss-vulnerability?_s_id=cve
    label: audit@patchstack.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T09:16:17.876Z'
---

## Overview

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in bPlugins B Blocks b-blocks allows Stored XSS.This issue affects B Blocks: from n/a through 2.1.8.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.