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CVE-2025-3894— Stored XSS in MegaBIP

Quick assessment

Affected
Jan Syski MegaBIP
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.

MegaBIP是MegaBIP公司的一个用于创建BIP网站的软件。 MegaBIP 5.20之前版本存在跨站脚本漏洞，该漏洞源于文本编辑器未中和用户输入，可能导致存储型跨站脚本攻击。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.40% · P33

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-3894

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Stored XSS in MegaBIP
Source: CVE Program / CVE List V5
Vulnerability Description
Text editor embedded into MegaBIP software does not neutralize user input allowing Stored XSS attacks on other users. In order to use the editor high privileges are required.   Version 5.20 of MegaBIP fixes this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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
MegaBIP 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MegaBIP是MegaBIP公司的一个用于创建BIP网站的软件。 MegaBIP 5.20之前版本存在跨站脚本漏洞，该漏洞源于文本编辑器未中和用户输入，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
Jan Syski MegaBIP 0 ~ 5.19 -

II. Public POCs for CVE-2025-3894

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2025-3894

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Vendor Advisories for CVE-2025-3894 (1)

Same Patch Batch · Jan Syski · 2025-05-23 · 3 CVEs total

CVE-2025-3895 Low token entropy in MegaBIP
CVE-2025-3893 SQL Injection in MegaBIP

IV. Related Vulnerabilities

Same product: MegaBIP
Same vendor: Jan Syski
Same weakness: CWE-79

V. Comments for CVE-2025-3894

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