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CVE-2026-11434— FluentCMS Blocks Plugin blocks cross site scripting

Quick assessment

Affected
n/a FluentCMS
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.

FluentCMS是FluentCMS开源的一个内容管理系统。 FluentCMS 0.0.5版本存在代码注入漏洞，该漏洞源于Blocks Plugin组件文件/admin/blocks中未知函数问题，可能导致跨站脚本攻击。

CVSS 2.4 · Low EPSS 0.27% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a FluentCMS 0.0.5 affected
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I. Basic Information for CVE-2026-11434

Vulnerability Information
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Vulnerability Title
FluentCMS Blocks Plugin blocks cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in FluentCMS 0.0.5. The impacted element is an unknown function of the file /admin/blocks of the component Blocks Plugin. This manipulation causes cross site scripting. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
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
Vulnerability Title
FluentCMS 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FluentCMS是FluentCMS开源的一个内容管理系统。 FluentCMS 0.0.5版本存在代码注入漏洞，该漏洞源于Blocks Plugin组件文件/admin/blocks中未知函数问题，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- FluentCMS 0.0.5 cpe:2.3:a:fluentcms:fluentcms:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-11434

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III. Intelligence Information for CVE-2026-11434

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Security Blog Posts for CVE-2026-11434 (3)

IV. Related Vulnerabilities

Same product: FluentCMS
Same vendor: n/a
Same weakness: CWE-79

V. Comments for CVE-2026-11434

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