Weakness (CWE)
CWE-94: Improper Control of Generation of Code
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
How to prevent it (7 mitigations)
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Architecture and Design
Refactor your program so that you do not have to dynamically generate code.
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Architecture and Design
Run your code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which code can be executed by your product.
Examples include the Unix chroot jail and AppArmor. In general, managed code may provide some protection.
This may not be a feasible solution, and it only limits the impact to the operating system; the rest of your application may still be subject to compromise.
Be careful to avoid CWE-243 and other weaknesses related to jails.
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Implementation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
To reduce the likelihood of code injection, use stringent allowlists that limit which constructs are allowed. If you are dynamically constructing code that invokes a function, then verifying that the input is alphanumeric might be insufficient. An attacker might still be able to reference a dangerous function that you did not intend to allow, such as system(), exec(), or exit().
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Testing
Use dynamic tools and techniques that interact with the product using large test suites with many diverse inputs, such as fuzz testing (fuzzing), robustness testing, and fault injection. The product's operation may slow down, but it should not become unstable, crash, or generate incorrect results.
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Operation
Run the code in an environment that performs automatic taint propagation and prevents any command execution that uses tainted variables, such as Perl's "-T" switch. This will force the program to perform validation steps that remove the taint, although you must be careful to correctly validate your inputs so that you do not accidentally mark dangerous inputs as untainted (see CWE-183 and CWE-184).
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Operation
Run the code in an environment that performs automatic taint propagation and prevents any command execution that uses tainted variables, such as Perl's "-T" switch. This will force the program to perform validation steps that remove the taint, although you must be careful to correctly validate your inputs so that you do not accidentally mark dangerous inputs as untainted (see CWE-183 and CWE-184).
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Implementation
For Python programs, it is frequently encouraged to use the ast.literal_eval() function instead of eval, since it is intentionally designed to avoid executing code. However, an adversary could still cause excessive memory or stack consumption via deeply nested structures [REF-1372], so the python documentation discourages use of ast.literal_eval() on untrusted data [REF-1373].
Source: MITRE CWE-94
1,073 results · Clear filters · Feed
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Low 3.5
SourceCodester Pharmacy Sales and Inventory System main create_medicine_presentation cross site scripting
A vulnerability has been found in SourceCodester Pharmacy Sales and Inventory System 1.0. This affects the function create_medicine_presentation of the file /ShowForm/create_medicine_presentation/main. The manipulation of the argument medicine_presentation le…
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Low 3.5
SourceCodester Pharmacy Sales and Inventory System main create_supplier cross site scripting
A flaw has been found in SourceCodester Pharmacy Sales and Inventory System 1.0. Affected by this issue is the function create_supplier of the file /ShowForm/create_supplier/main. Executing a manipulation of the argument company_name can lead to cross site sc…
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Low 3.5
SourceCodester Pharmacy Sales and Inventory System main create_medicine_name cross site scripting
A vulnerability was detected in SourceCodester Pharmacy Sales and Inventory System 1.0. Affected by this vulnerability is the function create_medicine_name of the file /ShowForm/create_medicine_name/main. Performing a manipulation of the argument medicine_nam…
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Low 3.5
Mettle sendportal Campaign webview cross site scripting
A vulnerability was detected in Mettle sendportal up to 3.0.1. This affects an unknown part of the file /webview/ of the component Campaign Handler. The manipulation of the argument content results in cross site scripting. The attack can be launched remotely.…
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Low 3.5
raisulislamg4 student_management_system_by_php admission_form_check.php cross site scripting
A vulnerability was found in raisulislamg4 student_management_system_by_php up to 310d950e09013d5133c6b9210aff9444382d16d1. The impacted element is an unknown function of the file admission_form_check.php. The manipulation of the argument Message results in c…
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Low 2.4
sambitraj STUDENT-MANAGEMENT-SYSTEM Dashboard cross site scripting
A vulnerability has been found in sambitraj STUDENT-MANAGEMENT-SYSTEM 1.0. Affected is an unknown function of the component Dashboard Page. The manipulation of the argument Name leads to cross site scripting. It is possible to initiate the attack remotely. Th…
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Low 2.4
QianFox FoxCMS Administrator Backend edit cross site scripting
A vulnerability was determined in QianFox FoxCMS up to 1.2.6. The impacted element is an unknown function of the file /Tag/edit of the component Administrator Backend. Executing a manipulation can lead to cross site scripting. It is possible to launch the att…
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Low 2.4
SourceCodester/oretnom23 Hospitals Patient Records Management System view_patient cross site scripting
A vulnerability was found in SourceCodester/oretnom23 Hospitals Patient Records Management System 1.0. The impacted element is an unknown function of the file /admin/?page=patients/view_patient. Performing a manipulation of the argument Remarks results in cro…
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Low 3.5
SourceCodester Student Grades Management System students.php cross site scripting
A vulnerability was identified in SourceCodester Student Grades Management System 1.0. Affected by this issue is some unknown functionality of the file students.php. The manipulation of the argument Remarks leads to cross site scripting. Remote exploitation o…
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Low 3.5
yashpokharna2555 StudentManagementSystem student.php cross site scripting
A vulnerability was detected in yashpokharna2555 StudentManagementSystem cb2f558ddf8d19396de0f92abf2d224d46a0a203. This impacts an unknown function of the file /student.php. Performing a manipulation of the argument FIRST_NAME results in cross site scripting.…
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Low 3.5
SourceCodester Indian Invoicing System Invoice Template Render Database-Backed add_order.php cross site scripting
A security flaw has been discovered in SourceCodester Indian Invoicing System up to 0.x/1.0. The impacted element is an unknown function of the file /Invoicing/add_order.php of the component Invoice Template Render Database-Backed. The manipulation of the arg…
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Low 2.4
SourceCodester SUP Online Shopping productedit.php cross site scripting
A vulnerability was identified in SourceCodester SUP Online Shopping 1.0. The impacted element is an unknown function of the file /admin/productedit.php. The manipulation of the argument productName leads to cross site scripting. It is possible to initiate th…
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Low 3.5
vBulletin Login cross site scripting
A vulnerability was found in vBulletin 6.x. This impacts an unknown function of the component Login. Performing a manipulation results in cross site scripting. It is possible to initiate the attack remotely. The exploit has been made public and could be used.…
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Low 2.4
Devs Palace ERP Online chart-save cross site scripting
A vulnerability was identified in Devs Palace ERP Online up to 4.0.0. This impacts an unknown function of the file /accounts/chart-save. Such manipulation leads to cross site scripting. The attack may be performed from remote. The exploit is publicly availabl…
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Low 2.4
Devs Palace ERP Online mr-save cross site scripting
A security vulnerability has been detected in Devs Palace ERP Online up to 4.0.0. This vulnerability affects unknown code of the file /accounts/mr-save. Such manipulation leads to cross site scripting. The attack can be launched remotely. The exploit has been…
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Low 2.4
Devs Palace ERP Online add_new_customer cross site scripting
A weakness has been identified in Devs Palace ERP Online up to 4.0.0. This affects an unknown part of the file /inventory/add_new_customer. This manipulation causes cross site scripting. The attack can be initiated remotely. The exploit has been made availabl…
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Low 2.4
Devs Palace ERP Online sales_save cross site scripting
A security flaw has been discovered in Devs Palace ERP Online up to 4.0.0. Affected by this issue is some unknown functionality of the file /inventory/sales_save. The manipulation results in cross site scripting. It is possible to launch the attack remotely. …
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Low 2.4
Devs Palace ERP Online purchase_save cross site scripting
A vulnerability was identified in Devs Palace ERP Online up to 4.0.0. Affected by this vulnerability is an unknown functionality of the file /inventory/purchase_save. The manipulation leads to cross site scripting. It is possible to initiate the attack remote…
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Low 2.4
Devs Palace ERP Online item-save cross site scripting
A flaw has been found in Devs Palace ERP Online up to 4.0.0. This impacts an unknown function of the file /inventory/item-save. This manipulation causes cross site scripting. The attack is possible to be carried out remotely. The exploit has been published an…
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Low 2.4
Devs Palace ERP Online customer-save cross site scripting
A vulnerability was detected in Devs Palace ERP Online up to 4.0.0. This affects an unknown function of the file /inventory/customer-save. The manipulation results in cross site scripting. The attack can be executed remotely. The exploit is now public and may…
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Low 2.4
Devs Palace ERP Online supplier-save cross site scripting
A security vulnerability has been detected in Devs Palace ERP Online up to 4.0.0. The impacted element is an unknown function of the file /inventory/supplier-save. The manipulation leads to cross site scripting. Remote exploitation of the attack is possible. …
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Low 2.4
Devs Palace ERP Online purchase_return_save cross site scripting
A weakness has been identified in Devs Palace ERP Online up to 4.0.0. The affected element is an unknown function of the file /inventory/purchase_return_save. Executing a manipulation can lead to cross site scripting. The attack may be launched remotely. The …
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Low 2.4
SourceCodester Pharmacy Sales and Inventory System index.php users cross site scripting
A flaw has been found in SourceCodester Pharmacy Sales and Inventory System 1.0. This affects an unknown part of the file /index.php?page=users. Executing a manipulation of the argument Name can lead to cross site scripting. The attack may be launched remotel…
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Low 3.5
kerwincui FastBee System Notice SysNoticeController.java add cross site scripting
A vulnerability was determined in kerwincui FastBee up to 1.2.1. The impacted element is the function Add of the file springboot/fastbee-admin/src/main/java/com/fastbee/web/controller/system/SysNoticeController.java of the component System Notice Handler. Thi…
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Low 3.5
LinkStackOrg LinkStack UserController.php editPage cross site scripting
A weakness has been identified in LinkStackOrg LinkStack up to 4.8.6. Impacted is the function editPage of the file app/Http/Controllers/UserController.php. Executing a manipulation of the argument pageDescription can lead to cross site scripting. It is possi…
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Low 3.5
SourceCodester Pharmacy Sales and Inventory System index.php customer cross site scripting
A vulnerability was detected in SourceCodester Pharmacy Sales and Inventory System 1.0. The impacted element is the function Customer of the file /index.php?page=customer. The manipulation of the argument Name results in cross site scripting. The attack may b…
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Low 2.4
SourceCodester Pizzafy Ecommerce System ajax.php save_user cross site scripting
A vulnerability was determined in SourceCodester Pizzafy Ecommerce System 1.0. This vulnerability affects the function save_user of the file /admin/ajax.php?action=save_user. Executing a manipulation of the argument Name can lead to cross site scripting. The …
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Low 2.4
SourceCodester Pizzafy Ecommerce System ajax.php save_order cross site scripting
A vulnerability was found in SourceCodester Pizzafy Ecommerce System 1.0. This affects the function save_order of the file /admin/ajax.php?action=save_order. Performing a manipulation of the argument first_name results in cross site scripting. Remote exploita…
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Low 2.4
SourceCodester Pizzafy Ecommerce System ajax.php save_menu cross site scripting
A vulnerability has been found in SourceCodester Pizzafy Ecommerce System 1.0. Affected by this issue is the function save_menu of the file /admin/ajax.php?action=save_menu. Such manipulation of the argument Name leads to cross site scripting. The attack may …
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Low 2.4
SourceCodester Pizzafy Ecommerce System index.php save_settings cross site scripting
A flaw has been found in SourceCodester Pizzafy Ecommerce System 1.0. Affected by this vulnerability is the function save_settings of the file /admin/index.php?page=save_settings. This manipulation of the argument Name causes cross site scripting. The attack …
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Low 2.4
SourceCodester Pharmacy Sales and Inventory System index.php supplier cross site scripting
A vulnerability was determined in SourceCodester Pharmacy Sales and Inventory System 1.0. The impacted element is the function supplier of the file /index.php?page=supplier. Executing a manipulation of the argument Name can lead to cross site scripting. The a…
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Low 2.4
SourceCodester Pharmacy Sales and Inventory System index.php cross site scripting
A vulnerability was found in SourceCodester Pharmacy Sales and Inventory System 1.0. Affected is an unknown function of the file /index.php?page=product. Performing a manipulation of the argument ID results in cross site scripting. It is possible to initiate …
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Low 3.5CVE-2026-7222 Public exploit
code-projects Coaching Management System Complaint Form complaint.php cross site scripting
A vulnerability was determined in code-projects Coaching Management System 1.0. Affected by this vulnerability is an unknown functionality of the file /cims/modules/student/complaint.php of the component Complaint Form Page. This manipulation of the argument …
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Low 3.5
code-projects Invoice System in Laravel item cross site scripting
A flaw has been found in code-projects Invoice System in Laravel 1.0. Affected is an unknown function of the file /item. Executing a manipulation of the argument item name/description can lead to cross site scripting. It is possible to launch the attack remot…
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Low 2.4
code-projects Chat System send_message.php cross site scripting
A vulnerability was detected in code-projects Chat System 1.0. This affects an unknown function of the file /admin/send_message.php of the component Chat Interface. The manipulation of the argument msg results in cross site scripting. The attack may be launch…
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Low 2.4
D-Link DSL-2740R Wireless Setup Section cross site scripting
A vulnerability was identified in D-Link DSL-2740R EU_01.15. Impacted is an unknown function of the component Wireless Setup Section. Such manipulation of the argument Wireless Network Name leads to cross site scripting. The attack can be executed remotely. T…
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Low 2.4
MaxSite CMS ushki Plugin cross site scripting
A vulnerability was found in MaxSite CMS up to 109.3. Impacted is an unknown function of the component ushki Plugin. Performing a manipulation of the argument f_ushka_new/f_ushk results in cross site scripting. Remote exploitation of the attack is possible. T…
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Low 2.4
MaxSite CMS Guestbook Plugin cross site scripting
A vulnerability has been found in MaxSite CMS up to 109.3. This issue affects some unknown processing of the component Guestbook Plugin. Such manipulation of the argument f_text/f_slug/f_limit/f_email leads to cross site scripting. The attack may be launched …
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Low 2.4
MaxSite CMS down_count Plugin cross site scripting
A flaw has been found in MaxSite CMS up to 109.3. This vulnerability affects unknown code of the component down_count Plugin. This manipulation of the argument f_file/f_prefix causes cross site scripting. The attack may be initiated remotely. The exploit has …
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Low 2.4
MaxSite CMS mail_send Plugin cross site scripting
A security vulnerability has been detected in MaxSite CMS up to 109.3. Affected by this issue is some unknown functionality of the component mail_send Plugin. The manipulation of the argument f_subject/f_files/f_from leads to cross site scripting. The attack …