Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-57311— Unrestricted Upload of File with Dangerous Type in Windu CMS

Quick assessment

Affected
JCD Windu CMS
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.

JCD Windu CMS是波兰JCD公司的一款CMS内容管理系统软件。 JCD Windu CMS 4.1版本存在任意文件上传漏洞，该漏洞源于未验证上传文件类型，可能导致经过身份验证的攻击者上传任意文件（包括PHP），进而实现远程代码执行。

CVSS 5.3 · Medium EPSS 0.37% · P31

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell

Affected Version Matrix 1

VendorProduct Version RangeStatus
JCD Windu CMS 4.1 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-57311

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Unrestricted Upload of File with Dangerous Type in Windu CMS
Source: CVE Program / CVE List V5
Vulnerability Description
Windu CMS does not validate types of uploaded files. An authenticated attacker can upload arbitrary files, including PHP. This can lead to Remote Code Execution. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 4.1 but may also affect other versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
JCD Windu CMS 任意文件上传漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JCD Windu CMS是波兰JCD公司的一款CMS内容管理系统软件。 JCD Windu CMS 4.1版本存在任意文件上传漏洞，该漏洞源于未验证上传文件类型，可能导致经过身份验证的攻击者上传任意文件（包括PHP），进而实现远程代码执行。
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
JCD Windu CMS 4.1 -

II. Public POCs for CVE-2026-57311

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-57311

请登录查看更多情报信息。

Security Blog Posts for CVE-2026-57311 (1)

Same Patch Batch · JCD · 2026-07-20 · 3 CVEs total

CVE-2026-57309 Blind SQL Injection in Windu CMS
CVE-2026-57310 Weak password hashing in Windu CMS

IV. Related Vulnerabilities

Same product: Windu CMS
Same vendor: JCD
Same weakness: CWE-434

V. Comments for CVE-2026-57311

No comments yet

Leave a comment