Miantang IoT-PHP - Unauthenticated SQL Injection in /userlogin (CVE-2026-71237) | HOL Guard CVE

Critical · CVSS 9.8CVE-2026-71237

Miantang IoT-PHP - Unauthenticated SQL Injection in /userlogin

Answer in brief

CVE-2026-71237 records a Critical severity (CVSS 9.8) vulnerability in Miantang IoT-PHP - Unauthenticated SQL Injection in /userlogin. The current sources do not mark it as known exploited. The current feed maps Miantang/IoT-PHP (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 5, 2026Updated Aug 26, 2026Source checked Sep 20, 2026First seen by HOL Aug 5, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Miantang/IoT-PHP (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Miantang/IoT-PHPgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Miantang/IoT-PHP.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

GitHub security advisorygithub.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.