9.8

CVSS Score

3.0

-

CVSS Score

Basic Information

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CVE-2018-18530

CVE-2018-18530: ThinkPHP SQLi Vulnerability

ThinkPHP 5.1.25 has SQL Injection via the count parameter because the library/think/db/Query.php aggregate function mishandles the aggregate variable. NOTE: a backquote character is required in the attack URI.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2018-18530

CVE-2018-18530:

9.8

CVSS Score

3.0

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
topthink/framework	composer	<= 5.1.25

Technical Details

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Root Cause Analysis

The CVE-2018-18530 description explicitly attributes the vulnerability to mishandling of the aggregate variable in Query.php's aggregate function. Analysis from external sources (Kingkk's blog) confirms that user-supplied input flows into this function via parameters like 'count', which is then used unsafely in SQL construction. The lack of proper escaping or validation in the aggregate function's handling of the $field parameter allows attackers to inject SQL by leveraging backticks to break out of the intended query structure. While the parseKey function in Connection.php plays a role in query building, the CVE and technical analysis explicitly implicate the aggregate function in Query.php as the primary vulnerable entry point.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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