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CVE-2025-40723— Stored Cross-Site Scripting (XSS) vulnerability on Flatboard

Quick assessment

Affected
Flatboard Pro Flatboard
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.

Flatboard Pro是Flatboard开源的一个论坛系统。 Flatboard Pro 3.2.2之前版本存在跨站脚本漏洞，该漏洞源于对config.php中footer_text和announcement参数输入验证不足，可能导致存储型跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2025-40723

Vulnerability Information
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Vulnerability Title
Stored Cross-Site Scripting (XSS) vulnerability on Flatboard
Source: CVE Program / CVE List V5
Vulnerability Description
Stored Cross-Site Scripting (XSS) vulnerability in versions prior to Flatboard 3.2.2 of Flatboard Pro, consisting of a stored XSS due to lack of proper validation of user input, through the footer_text and announcement parameters in config.php.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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
Flatboard Pro 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flatboard Pro是Flatboard开源的一个论坛系统。 Flatboard Pro 3.2.2之前版本存在跨站脚本漏洞，该漏洞源于对config.php中footer_text和announcement参数输入验证不足，可能导致存储型跨站脚本攻击。
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
Flatboard Pro Flatboard 0 ~ 3.2.2 -

II. Public POCs for CVE-2025-40723

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III. Intelligence Information for CVE-2025-40723

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IV. Related Vulnerabilities

Same product: Flatboard
Same vendor: Flatboard Pro
Same weakness: CWE-79

V. Comments for CVE-2025-40723

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