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
O2OA Personal Profile script cross site scripting
A weakness has been identified in O2OA up to 10.0-410. This vulnerability affects unknown code of the file /x_processplatform_assemble_designer/jaxrs/script of the component Personal Profile Page. Executing manipulation of the argument name/alias/description/…
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Low 3.5
O2OA Personal Profile process cross site scripting
A security flaw has been discovered in O2OA up to 10.0-410. This affects an unknown part of the file /x_processplatform_assemble_designer/jaxrs/process of the component Personal Profile Page. Performing manipulation of the argument name/alias results in cross…
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Low 3.5
O2OA Personal Profile unit cross site scripting
A vulnerability was identified in O2OA up to 10.0-410. Affected by this issue is some unknown functionality of the file /x_organization_assemble_control/jaxrs/unit/ of the component Personal Profile Page. Such manipulation of the argument name/shortName/disti…
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Low 3.5
O2OA Personal Profile form cross site scripting
A vulnerability was determined in O2OA up to 10.0-410. Affected by this vulnerability is an unknown functionality of the file /x_processplatform_assemble_designer/jaxrs/form of the component Personal Profile Page. This manipulation of the argument name/alias/…
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Low 3.5
O2OA Personal Profile script cross site scripting
A vulnerability was found in O2OA up to 10.0-410. Affected is an unknown function of the file /x_cms_assemble_control/jaxrs/script of the component Personal Profile Page. The manipulation of the argument name/alias/description results in cross site scripting.…
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Low 3.5
O2OA Personal Profile form cross site scripting
A vulnerability was found in O2OA up to 10.0-410. Affected by this issue is some unknown functionality of the file /x_cms_assemble_control/jaxrs/form of the component Personal Profile Page. The manipulation results in cross site scripting. The attack may be l…
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Low 3.5
O2OA Personal Profile appdict cross site scripting
A vulnerability has been found in O2OA up to 10.0-410. Affected by this vulnerability is an unknown functionality of the file /x_cms_assemble_control/jaxrs/design/appdict of the component Personal Profile Page. The manipulation leads to cross site scripting. …
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Low 3.5
O2OA Personal Profile agent cross site scripting
A flaw has been found in O2OA up to 10.0-410. Affected is an unknown function of the file /x_program_center/jaxrs/agent of the component Personal Profile Page. Executing manipulation can lead to cross site scripting. The attack can be launched remotely. The e…
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Low 3.5
O2OA Personal Profile page cross site scripting
A vulnerability was detected in O2OA up to 10.0-410. This impacts an unknown function of the file /x_portal_assemble_designer/jaxrs/page of the component Personal Profile Page. Performing manipulation results in cross site scripting. The attack can be initiat…
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Low 3.5
O2OA Personal Profile widget cross site scripting
A vulnerability has been found in O2OA up to 10.0-410. The affected element is an unknown function of the file /x_portal_assemble_designer/jaxrs/widget of the component Personal Profile Page. Such manipulation leads to cross site scripting. The attack can be …
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Low 3.5
O2OA Personal Profile dict cross site scripting
A flaw has been found in O2OA up to 10.0-410. Impacted is an unknown function of the file /x_portal_assemble_designer/jaxrs/dict/ of the component Personal Profile Page. This manipulation of the argument name/alias/description causes cross site scripting. Rem…
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Low 3.5
O2OA Personal Profile script cross site scripting
A vulnerability was detected in O2OA up to 10.0-410. This issue affects some unknown processing of the file /x_program_center/jaxrs/script of the component Personal Profile Page. The manipulation of the argument name/alias/description results in cross site sc…
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Low 3.5
O2OA Personal Profile person cross site scripting
A weakness has been identified in O2OA up to 10.0-410. This affects an unknown part of the file /x_organization_assemble_control/jaxrs/person/ of the component Personal Profile Page. Executing manipulation of the argument Description can lead to cross site sc…
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Low 3.5
Portabilis i-Educar Cadastrar projeto educar_projeto_cad.php cross site scripting
A vulnerability was identified in Portabilis i-Educar up to 2.10. Affected by this vulnerability is an unknown functionality of the file /intranet/educar_projeto_cad.php of the component Cadastrar projeto Page. Such manipulation of the argument nome/observaca…
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Low 3.5
Portabilis i-Educar Cadastrar tipo de transferência educar_transferencia_tipo_cad.php cross site scripting
A vulnerability was determined in Portabilis i-Educar up to 2.10. Affected is an unknown function of the file /intranet/educar_transferencia_tipo_cad.php of the component Cadastrar tipo de transferência Page. This manipulation of the argument nm_tipo/desc_tip…
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Low 3.5
O2OA calendarConfig cross site scripting
A security flaw has been discovered in O2OA up to 10.0-410. This vulnerability affects unknown code of the file /x_organization_assemble_personal/jaxrs/definition/calendarConfig. The manipulation of the argument toMonthViewName results in cross site scripting…
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Low 2.4
ZrLog Theme Configuration Form config cross site scripting
A security vulnerability has been detected in ZrLog up to 3.1.5. This vulnerability affects unknown code of the file /api/admin/template/config of the component Theme Configuration Form. Such manipulation of the argument footerLink leads to cross site scripti…
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Low 3.5
Weaver E-Mobile Mobile Management Platform cross site scripting
A vulnerability was identified in Weaver E-Mobile Mobile Management Platform up to 20250813. Affected by this vulnerability is an unknown functionality. The manipulation of the argument gohome leads to cross site scripting. The attack can be initiated remotel…
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Low 2.4
mtons mblog update cross site scripting
A vulnerability was detected in mtons mblog up to 3.5.0. This issue affects some unknown processing of the file /admin/options/update. The manipulation of the argument input results in cross site scripting. It is possible to launch the attack remotely. The ex…
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Low 3.5
mtons mblog Post submit cross site scripting
A security vulnerability has been detected in mtons mblog up to 3.5.0. This vulnerability affects unknown code of the file /post/submit of the component Post Handler. The manipulation of the argument content/title/ leads to cross site scripting. It is possibl…
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Low 2.4
oitcode samarium Team Image team cross site scripting
A vulnerability was found in oitcode samarium up to 0.9.6. This impacts an unknown function of the file /dashboard/team of the component Team Image Handler. The manipulation results in cross site scripting. The attack may be launched remotely. The exploit has…
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Low 2.4
oitcode samarium Pages Image webpage cross site scripting
A security flaw has been discovered in oitcode samarium up to 0.9.6. This vulnerability affects unknown code of the file /cms/webpage/ of the component Pages Image Handler. The manipulation results in cross site scripting. The attack may be performed from a r…
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Low 3.5
mtons mblog profile cross site scripting
A flaw has been found in mtons mblog up to 3.5.0. Affected by this vulnerability is an unknown functionality of the file /settings/profile. Executing manipulation of the argument signature can lead to cross site scripting. The attack may be launched remotely.…
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Low 2.4
Scada-LTS Folder pointHierarchySLTS cross site scripting
A vulnerability was identified in Scada-LTS up to 2.7.8.1. The affected element is an unknown function of the file /pointHierarchySLTS of the component Folder Handler. The manipulation of the argument Title leads to cross site scripting. It is possible to ini…
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Low 3.5
Scada-LTS watch_list.shtm cross site scripting
A vulnerability was determined in Scada-LTS up to 2.7.8.1. This impacts an unknown function of the file watch_list.shtm. Executing manipulation of the argument Name can lead to cross site scripting. It is possible to launch the attack remotely. The exploit ha…
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Low 3.5
SourceCodester Advanced School Management System addNotice cross site scripting
A vulnerability was detected in SourceCodester Advanced School Management System 1.0. The impacted element is an unknown function of the file /index.php/notice/addNotice. The manipulation of the argument noticeSubject results in cross site scripting. It is po…
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Low 3.5
CodeAstro Ecommerce Website Edit Your Account my_account.php cross site scripting
A vulnerability was found in CodeAstro Ecommerce Website 1.0. This impacts an unknown function of the file /customer/my_account.php?edit_account of the component Edit Your Account Page. Performing manipulation of the argument Username results in cross site sc…
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Low 3.5
Scada-LTS compound_events.shtm cross site scripting
A flaw has been found in Scada-LTS up to 2.7.8.1. The impacted element is an unknown function of the file compound_events.shtm. This manipulation of the argument Name causes cross site scripting. The attack is possible to be carried out remotely. The exploit …
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Low 3.5
Scada-LTS maintenance_events.shtm cross site scripting
A vulnerability was detected in Scada-LTS up to 2.7.8.1. The affected element is an unknown function of the file maintenance_events.shtm. The manipulation of the argument Alias results in cross site scripting. The attack can be executed remotely. The exploit …
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Low 3.5
Scada-LTS view_edit.shtm cross site scripting
A security vulnerability has been detected in Scada-LTS up to 2.7.8.1. Impacted is an unknown function of the file view_edit.shtm. The manipulation of the argument Name leads to cross site scripting. Remote exploitation of the attack is possible. The exploit …
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Low 3.5
SolidInvoice Clients clients cross site scripting
A security flaw has been discovered in SolidInvoice up to 2.4.0. The impacted element is an unknown function of the file /clients of the component Clients Module. Performing manipulation of the argument Name results in cross site scripting. The attack is poss…
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Low 3.5
SolidInvoice Tax Rates rates cross site scripting
A vulnerability was identified in SolidInvoice up to 2.4.0. The affected element is an unknown function of the file /tax/rates of the component Tax Rates Module. Such manipulation of the argument Name leads to cross site scripting. The attack can be executed …
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Low 3.5
SolidInvoice Quote quotes cross site scripting
A vulnerability was determined in SolidInvoice up to 2.4.0. Impacted is an unknown function of the file /quotes of the component Quote Module. This manipulation of the argument Name causes cross site scripting. Remote exploitation of the attack is possible. T…
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Low 3.5
SolidInvoice Invoice Creation invoice cross site scripting
A vulnerability was found in SolidInvoice up to 2.4.0. This issue affects some unknown processing of the file /invoice of the component Invoice Creation Module. The manipulation of the argument Client Name results in cross site scripting. The attack may be la…
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Low 3.5
SolidInvoice Recurring Invoice recurring cross site scripting
A vulnerability has been found in SolidInvoice up to 2.4.0. This vulnerability affects unknown code of the file /invoice/recurring of the component Recurring Invoice Module. The manipulation of the argument client name leads to cross site scripting. The attac…
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Low 3.5
jasonclark getsemantic index.php cross site scripting
A vulnerability has been found in jasonclark getsemantic up to 040c96eb8cf9947488bd01b8de99b607b0519f7d. The impacted element is an unknown function of the file /index.php. The manipulation of the argument view leads to cross site scripting. Remote exploitati…
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Low 3.5
Scada-LTS SVG File view_edit.shtm cross site scripting
A security vulnerability has been detected in Scada-LTS 2.7.8.1. This issue affects some unknown processing of the file view_edit.shtm of the component SVG File Handler. Such manipulation of the argument backgroundImageMP leads to cross site scripting. The at…
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Low 3.5
Scada-LTS publisher_edit.shtm cross site scripting
A weakness has been identified in Scada-LTS 2.7.8.1. This vulnerability affects unknown code of the file publisher_edit.shtm. This manipulation of the argument Name causes cross site scripting. The attack can be initiated remotely. The exploit has been made a…
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Low 3.5
Scada-LTS mailing_lists.shtm cross site scripting
A security flaw has been discovered in Scada-LTS 2.7.8.1. This affects an unknown part of the file mailing_lists.shtm. The manipulation of the argument name/userList/address results in cross site scripting. It is possible to launch the attack remotely. The ex…
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Low 3.5
Scada-LTS new cross site scripting
A vulnerability was found in Scada-LTS 2.7.8.1. Affected is an unknown function of the file pointHierarchy/new/. Performing manipulation of the argument Title results in cross site scripting. The attack is possible to be carried out remotely. The exploit has …