| Título | github Cafe Management System (CafeManagement) - Neethuharii 1.0 Unauthenticated SQL Injection leading to Authentication Bypass |
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| Descrição | The login handler CafePortalLogin.php builds its SQL query by directly concatenating the user-supplied uname (POST) parameter, with no prepared statement, escaping, or input validation:
$username = $_POST[‘uname’]; // raw, unsanitized
…
$sql = “SELECT * FROM register WHERE Username=’$username’”; // string concatenation
$result = mysqli_query($connection, $sql);
if (mysqli_num_rows($result) == 0) { $invalid_error = “Username does not exist”; }
else { $row = mysqli_fetch_assoc($result);
if ($row[‘Password’] == $password) { /* login success */ } }
The uname parameter is injectable. Because the fetched row’s Password column is later compared in PHP against the attacker-supplied password, a UNION SELECT allows the attacker to forge the password value and authenticate as any user — a full authentication bypass. The same flaw also permits full database extraction. |
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| Fonte | ⚠️ https://medium.com/@mr.yk404/unauthenticated-sql-injection-leading-to-authentication-bypass-in-cafemanagement-php-e64abc2f52da |
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| Utilizador | Yashkumar Keral (UID 99903) |
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| Submissão | 20/07/2026 17h57 (há 2 meses) |
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| Moderação | 23/09/2026 12h50 (2 months later) |
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| Estado | Aceite |
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| Entrada VulDB | 408920 [Neethuharii CafeManagement Login CafePortalLogin.php uname Injeção SQL] |
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| Pontos | 20 |
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