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Micro-Learning Topic: SQL injection (Detected by phrase)

Matched on "sqli"

What is this? (2min video)

This is probably one of the two most exploited vulnerabilities in web applications and has led to a number of high profile company breaches. It occurs when an application fails to sanitize or validate input before using it to dynamically construct a statement. An attacker that exploits this vulnerability will be able to gain access to the underlying database and view or modify data without permission.

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github-actions bot commented Aug 21, 2025

🔐 Secure Code Review (AI)

Risk Summary: High (2), Medium (1)

  1. Finding: SQL Injection Risk

    • Why it matters: The use of string interpolation in SQL queries can lead to SQL injection vulnerabilities, allowing attackers to manipulate the query and access unauthorized data.
    • Evidence (diff lines):
      query = f"SELECT * FROM users WHERE username = '{username}' AND password = '{hashed_password}' "
      query = f"SELECT * FROM users WHERE id = {user_id} "
    • Fix (concrete): Use parameterized queries or prepared statements to safely handle user input:
      query = "SELECT * FROM users WHERE username = %s AND password = %s"
      cursor.execute(query, (username, hashed_password))
  2. Finding: XSS Vulnerability

    • Why it matters: The use of eval() on user-controlled data can lead to Cross-Site Scripting (XSS) attacks, allowing an attacker to execute arbitrary JavaScript in the context of the user's browser.
    • Evidence (diff lines):
      const data = decodeURIComponent(location.hash.slice(1));
      eval(data);
    • Fix (concrete): Avoid using eval() and instead use safer alternatives such as JSON parsing or direct manipulation of DOM elements:
      const data = decodeURIComponent(location.hash.slice(1));
      // Process data safely without eval
  3. Finding: Unnecessary Whitespace in SQL Queries

    • Why it matters: While not a direct security risk, trailing whitespace in SQL queries can lead to confusion and potential issues in query execution.
    • Evidence (diff lines):
      query = f"SELECT * FROM users WHERE username = '{username}' AND password = '{hashed_password}' "
      query = f"SELECT * FROM users WHERE id = {user_id} "
    • Fix (concrete): Remove unnecessary whitespace to maintain code clarity:
      query = f"SELECT * FROM users WHERE username = '{username}' AND password = '{hashed_password}'"
      query = f"SELECT * FROM users WHERE id = {user_id}"

Safeguards Checklist:

  • [Fail] Parameterized queries used for database access.
  • [Fail] Safe handling of user input/output to prevent XSS.
  • [Pass] Code clarity maintained (though whitespace issue noted).

The diff is small and focused, but the identified issues are critical and should be addressed promptly to mitigate security risks.


Models can make mistakes. Verify before merging.

@secure-code-warrior-for-github

Micro-Learning Topic: Injection attack (Detected by phrase)

Matched on "injection attack"

Injection flaws, such as SQL, NoSQL, OS, and LDAP injection, occur when untrusted data is sent to an interpreter as part of a command or query. The attacker’s hostile data can trick the interpreter into executing unintended commands or accessing data without proper authorization. Source: https://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project

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Micro-Learning Topic: Sensitive information exposure (Detected by phrase)

Matched on "sensitive data expose"

What is this? (2min video)

Displaying too much information without proper access-control can lead to sensitive data being revealed that could be of value to an attacker directly or useful in a subsequent attack.

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@secure-code-warrior-for-github

Micro-Learning Topic: Race condition (Detected by phrase)

Matched on "race condition"

What is this? (2min video)

A race condition is a flaw that produces an unexpected result when the timing of actions impact other actions.

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@secure-code-warrior-for-github

Micro-Learning Topic: Cross-site scripting (Detected by phrase)

Matched on "Cross-Site Scripting"

Cross-site scripting vulnerabilities occur when unescaped input is rendered into a page displayed to the user. When HTML or script is included in the input, it will be processed by a user's browser as HTML or script and can alter the appearance of the page or execute malicious scripts in their user context.

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@sonarqubecloud
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