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CVE-2026-71237— Miantang IoT-PHP - Unauthenticated SQL Injection in /userlogin

Quick assessment

Affected
Miantang IoT-PHP
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MianTang IoT是MianTang个人开发者开源的一款物联网相关开发框架。 MianTang IoT 存在SQL注入漏洞，该漏洞源于index.php文件的/userlogin路由中，password参数未经过滤直接拼接进SQL查询语句，且htmlspecialchars()默认不编码单引号，导致容易受到SQL注入攻击，未认证攻击者可通过提交特制有效载荷绕过身份验证，并利用UNION注入提取数据库中任意数据。

CVSS 9.8 · Critical EPSS 0.78% · P55

Affected Version Matrix 1

VendorProduct Version RangeStatus
Miantang IoT-PHP affected
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I. Basic Information for CVE-2026-71237

Vulnerability Information
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Vulnerability Title
Miantang IoT-PHP - Unauthenticated SQL Injection in /userlogin
Source: CVE Program / CVE List V5
Vulnerability Description
Miantang/IoT-PHP's index.php implements a POST /userlogin route that reads the password directly from ['pwd'] with no sanitization and concatenates it into a raw SQL string: mysql_query("select * from userlists where username='' and password='' limit 1"). An unauthenticated attacker can submit a payload such as pwd=' OR '1'='1 to bypass authentication and, via UNION-based injection, extract arbitrary data from the database.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
MianTang IoT SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MianTang IoT是MianTang个人开发者开源的一款物联网相关开发框架。 MianTang IoT 存在SQL注入漏洞，该漏洞源于index.php文件的/userlogin路由中，password参数未经过滤直接拼接进SQL查询语句，且htmlspecialchars()默认不编码单引号，导致容易受到SQL注入攻击，未认证攻击者可通过提交特制有效载荷绕过身份验证，并利用UNION注入提取数据库中任意数据。
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
Miantang IoT-PHP 0 -

II. Public POCs for CVE-2026-71237

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8546 chars
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III. Intelligence Information for CVE-2026-71237

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Other References for CVE-2026-71237 (1)

IV. Related Vulnerabilities

Same weakness: CWE-89

V. Comments for CVE-2026-71237

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