CVE-2026-104400— WordPress B Blocks plugin <= 2.1.8 - Cross Site Scripting (XSS) vulnerability
Quick assessment
Affected
bPlugins B Blocks
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 bPlugins B Blocks 插件的 b-blocks 组件中存在一种“在网页生成过程中对输入处理不当”（跨站脚本攻击，Stored XSS）漏洞。该漏洞允许攻击者存储恶意脚本，影响范围涵盖从最初版本至 2.1.8 版的 B Blocks 插件。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-104400
Vulnerability Information
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Vulnerability Title
WordPress B Blocks plugin <= 2.1.8 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-104400
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-104400 (1)
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V. Comments for CVE-2026-104400
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