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
5,297 results · Feed
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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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High 7.5
WordPress Add Custom Codes <= 4.80 - Arbitrary Code Execution vulnerability
Improper Control of Generation of Code ('Code Injection') vulnerability in SaifuMak Add Custom Codes add-custom-codes allows Code Injection.This issue affects Add Custom Codes: from n/a through <= 4.80.
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Critical 9.9
WordPress Code Engine Plugin <= 0.3.3 - Remote Code Execution (RCE) Vulnerability
Improper Control of Generation of Code ('Code Injection') vulnerability in Jordy Meow Code Engine code-engine allows Remote Code Inclusion.This issue affects Code Engine: from n/a through <= 0.3.3.
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Critical 10.0
WordPress Global DNS Plugin <= 3.1.0 - Remote Code Execution (RCE) Vulnerability
Improper Control of Generation of Code ('Code Injection') vulnerability in thehp Global DNS global-dns allows Remote Code Inclusion.This issue affects Global DNS: from n/a through <= 3.1.0.
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Medium 6.5
WordPress Alone < 7.8.5 - Arbitrary Code Execution Vulnerability
Improper Control of Generation of Code ('Code Injection') vulnerability in Beplusthemes Alone alone allows Code Injection.This issue affects Alone: from n/a through < 7.8.5.
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High 8.8CVE-2025-51991 Scanner template
XWiki through version 17.3.0 is vulnerable to Server-Side Template Injection (SSTI) in the Administration interface, sp…
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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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Critical 9.7
DeepChat One-click Remote Code Execution through Custom URL Handling
DeepChat is a smart assistant that connects powerful AI to your personal world. DeepChat before 0.3.1 has a one-click remote code execution vulnerability. An attacker can exploit this vulnerability by embedding a specially crafted deepchat: URL on any website…
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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 …
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Low 3.5
Scada-LTS scheduled_events.shtm cross site scripting
A vulnerability has been found in Scada-LTS 2.7.8.1. This impacts an unknown function of the file scheduled_events.shtm. Such manipulation of the argument alias leads to cross site scripting. The attack can be executed remotely. The exploit has been disclosed…
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Critical 9.8
Cloudflare Image Resizing <= 1.5.6 - Missing Authentication to Unauthenticated Remote Code Execution via rest_pre_dispatch Hook
The Cloudflare Image Resizing plugin for WordPress is vulnerable to Remote Code Execution due to missing authentication and insufficient sanitization within its hook_rest_pre_dispatch() method in all versions up to, and including, 1.5.6. This makes it possibl…
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Critical 10.0
Saurus CMS Community Edition 4.7.1 contains a vulnerability in the custom DB::prepare() function, which uses preg_repla…
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Low 2.4
Netis WF2419 Wireless Settings index.htm cross site scripting
A vulnerability was determined in Netis WF2419 1.2.29433. This vulnerability affects unknown code of the file /index.htm of the component Wireless Settings Page. This manipulation of the argument SSID with the input <img/src/onerror=prompt(8)> causes cross si…
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Medium 4.3
Portabilis i-Diario search_autocomplete cross site scripting
A vulnerability was determined in Portabilis i-Diario up to 1.5.0. This impacts an unknown function of the file /alunos/search_autocomplete. Executing manipulation of the argument q can lead to cross site scripting. The attack may be performed from a remote l…
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Low 3.5
Portabilis i-Diario Informações Adicionais /planos-de-ensino-por-disciplina cross site scripting
A vulnerability was found in Portabilis i-Diario up to 1.5.0. This affects an unknown function of the file /planos-de-ensino-por-disciplina/ of the component Informações Adicionais Page. Performing manipulation of the argument Parecer/Conteúdos/Objetivos resu…
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Low 3.5
Portabilis i-Diario Informações Adicionais /planos-de-ensino-por-areas-de-conhecimento cross site scripting
A vulnerability has been found in Portabilis i-Diario up to 1.5.0. The impacted element is an unknown function of the file /planos-de-ensino-por-areas-de-conhecimento/ of the component Informações Adicionais Page. Such manipulation of the argument Parecer/Con…
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Low 3.5
Portabilis i-Diario Informações Adicionais /planos-de-aulas-por-disciplina cross site scripting
A flaw has been found in Portabilis i-Diario up to 1.5.0. The affected element is an unknown function of the file /planos-de-aulas-por-disciplina/ of the component Informações Adicionais Page. This manipulation of the argument Parecer/Objeto de Conhecimento/H…
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Low 2.4
ZenCart CKEditor cross site scripting
A vulnerability was detected in ZenCart 2.1.0. Affected by this vulnerability is an unknown functionality of the component CKEditor. The manipulation leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the pub…
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Low 3.5
zhenfeng13 My-Blog Tag save cross site scripting
A weakness has been identified in zhenfeng13 My-Blog up to 1.0.0. This issue affects some unknown processing of the file /admin/tags/save of the component Tag Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The e…
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Low 3.5
ExpressGateway express-gateway REST Endpoint apps.js cross site scripting
A vulnerability has been found in ExpressGateway express-gateway up to 1.16.10. Affected is an unknown function in the library lib/rest/routes/apps.js of the component REST Endpoint. The manipulation leads to cross site scripting. It is possible to launch the…
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Low 3.5
ExpressGateway express-gateway REST Endpoint users.js cross site scripting
A flaw has been found in ExpressGateway express-gateway up to 1.16.10. This issue affects some unknown processing in the library lib/rest/routes/users.js of the component REST Endpoint. The manipulation leads to cross site scripting. The attack may be initiat…
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Medium 6.5
Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress <= 4.16.4 - Unauthenticated Arbitrary Shortcode Execution
The The Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 4.16.4. This is due to the …
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High 7.3
Soledad <= 8.6.7 - Unauthenticated Arbitrary Shortcode Execution
The The Soledad theme for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 8.6.7. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode…
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Medium 6.9
KAP 3.6.0 - TCC Bypass
Improper Control of Generation of Code ('Code Injection') vulnerability in Wulkano KAP on MacOS allows TCC Bypass.This issue affects KAP: 3.6.0.
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Medium 6.3CVE-2025-54466 EPSS 29%
Apache OFBiz: RCE Vulnerability in scrum plugin
Improper Control of Generation of Code ('Code Injection') vulnerability leading to a possible RCE in Apache OFBiz scrum plugin. This issue affects Apache OFBiz: before 24.09.02 only when the scrum plugin is used. Even unauthenticated attackers can exploit thi…
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Medium 6.3
Inpersttion For Theme <= 1.0 - Authenticated (Contributor+) Arbitrary Function Call
The Inpersttion For Theme plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.0 via the theme_section_shortcode() function. This is due to the plugin not restricting what functions can be called. This makes it p…
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Medium 4.3
PHPGurukul Zoo Management System add-foreigner-ticket.php cross site scripting
A vulnerability has been found in PHPGurukul Zoo Management System 2.1. This vulnerability affects unknown code of the file /admin/add-foreigner-ticket.php. The manipulation of the argument visitorname leads to cross site scripting. The attack can be initiate…
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Low 3.5
D-Link DIR-818LW DHCP Reserved Address bsc_lan.php cross site scripting
A vulnerability has been found in D-Link DIR-818LW 1.04. This vulnerability affects unknown code of the file /bsc_lan.php of the component DHCP Reserved Address Handler. The manipulation of the argument Name leads to cross site scripting. The attack can be in…
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Low 3.5
givanz Vvveb Endpoint post cross site scripting
A vulnerability has been found in givanz Vvveb up to 1.0.5. This vulnerability affects unknown code of the file /vadmin123/index.php?module=content/post&type=post of the component Endpoint. The manipulation leads to cross site scripting. The attack can be ini…
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Low 3.5
givanz Vvveb edit.tpl cross site scripting
A vulnerability was identified in givanz Vvveb up to 1.0.5. This affects an unknown part of the file admin/template/content/edit.tpl. The manipulation of the argument slug leads to cross site scripting. It is possible to initiate the attack remotely. The expl…
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High 8.6
HomeAssistant-Tapo-Control Code Injection Vulnerability in issues.yml Workflow
HomeAssistant-Tapo-Control offers Control for Tapo cameras as a Home Assistant component. Prior to commit 2a3b80f, there is a code injection vulnerability in the GitHub Actions workflow .github/workflows/issues.yml. It does not affect users of the Home Assist…
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Medium 6.5
WordPress Eventer plugin < 3.9.9.1 - Content Injection vulnerability
Improper Control of Generation of Code ('Code Injection') vulnerability in imithemes Eventer eventer allows Code Injection.This issue affects Eventer: from n/a through < 3.9.9.1.