Common Weakness Enumeration
CWE-94
Allowed-with-ReviewImproper Control of Generation of Code ('Code Injection')
Abstraction: Base · Status: Draft
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.
9394 vulnerabilities reference this CWE, most recent first.
CVE-2021-47736 (GCVE-0-2021-47736)
Vulnerability from cvelistv5 – Published: 2025-12-23 19:34 – Updated: 2026-07-15 01:24
VLAI
EPSS
VEX
Title
CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing
Summary
CMSimple_XH 1.7.4 contains an authenticated remote code execution vulnerability in the content editing functionality that allows administrative users to upload malicious PHP files. Attackers with valid credentials can exploit the CSRF token mechanism to create a PHP shell file that enables arbitrary command execution on the server.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-23 21:24 UTC
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/50367 | exploit |
| https://www.cmsimple-xh.org/ | product |
| https://www.vulncheck.com/advisories/cmsimplexh-a… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cmsimple-Xh | CMSimple_XH |
Affected:
1.7.4
cpe:2.3:a:cmsimple-xh:cmsimple_xh:1.7.4:*:*:*:*:*:*:* |
Date Public
2021-10-01 00:00
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CVE-2021-47735 (GCVE-0-2021-47735)
Vulnerability from cvelistv5 – Published: 2025-12-23 19:34 – Updated: 2026-03-05 12:02
VLAI
EPSS
VEX
Title
CMSimple 5.4 Authenticated Remote Code Execution via Template Editing
Summary
CMSimple 5.4 contains an authenticated remote code execution vulnerability that allows logged-in attackers to inject malicious PHP code into template files. Attackers can exploit the template editing functionality by crafting a reverse shell payload and saving it through the template editing endpoint with a valid CSRF token.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-23 21:20 UTC
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/50356 | exploit |
| https://www.cmsimple.org/ | product |
| https://www.vulncheck.com/advisories/cmsimple-aut… | third-party-advisory |
Impacted products
Date Public
2021-09-29 00:00
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CVE-2021-45029 (GCVE-0-2021-45029)
Vulnerability from cvelistv5 – Published: 2022-01-25 13:00 – Updated: 2024-08-04 04:32
VLAI
EPSS
VEX
Title
Apache ShenYu 2.4.1 Groovy Code Injection & SpEL Injection
Summary
Groovy Code Injection & SpEL Injection which lead to Remote Code Execution. This issue affected Apache ShenYu 2.4.0 and 2.4.1.
Severity
No CVSS data available.
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/3zzmwvg3012tg306x… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/01/25/8 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2022/01/26/1 | mailing-listx_refsource_MLIST |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache ShenYu (incubating) |
Affected:
Apache ShenYu (incubating) , < 2.4.2
(custom)
|
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CVE-2021-44529 (GCVE-0-2021-44529)
Vulnerability from cvelistv5 – Published: 2021-12-08 00:00 – Updated: 2026-08-04 03:55
VLAI
EPSS
VEX
Summary
A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2022-03-31 00:00 UTC
CWE
- CWE-94 - Code Injection (CWE-94)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Ivanti EPM |
Affected:
4.6.0-512
|
|
| ivanti | endpoint_manager_cloud_services_appliance |
Affected:
0 , ≤ 4.6_patch_512
(custom)
cpe:2.3:a:ivanti:endpoint_manager_cloud_services_appliance:4.6:patch_512:*:*:*:*:*:* |
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CVE-2021-44521 (GCVE-0-2021-44521)
Vulnerability from cvelistv5 – Published: 2022-02-11 12:20 – Updated: 2024-08-04 04:25
VLAI
EPSS
VEX
Title
Remote code execution for scripted UDFs
Summary
When running Apache Cassandra with the following configuration: enable_user_defined_functions: true enable_scripted_user_defined_functions: true enable_user_defined_functions_threads: false it is possible for an attacker to execute arbitrary code on the host. The attacker would need to have enough permissions to create user defined functions in the cluster to be able to exploit this. Note that this configuration is documented as unsafe, and will continue to be considered unsafe after this CVE.
Severity
No CVSS data available.
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/y4nb9s4co34j8hdfm… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/02/11/4 | mailing-listx_refsource_MLIST |
| https://jfrog.com/blog/cve-2021-44521-exploiting-… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2022022… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Cassandra |
Affected:
3.0.0 , < unspecified
(custom)
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CVE-2021-43811 (GCVE-0-2021-43811)
Vulnerability from cvelistv5 – Published: 2021-12-08 23:05 – Updated: 2024-08-04 04:03
VLAI
EPSS
VEX
Title
Code injection via unsafe YAML loading
Summary
Sockeye is an open-source sequence-to-sequence framework for Neural Machine Translation built on PyTorch. Sockeye uses YAML to store model and data configurations on disk. Versions below 2.3.24 use unsafe YAML loading, which can be made to execute arbitrary code embedded in config files. An attacker can add malicious code to the config file of a trained model and attempt to convince users to download and run it. If users run the model, the embedded code will run locally. The issue is fixed in version 2.3.24.
Severity
7.8 (High)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/awslabs/sockeye/security/advis… | x_refsource_CONFIRM |
| https://github.com/awslabs/sockeye/pull/964 | x_refsource_MISC |
| https://github.com/awslabs/sockeye/releases/tag/2.3.24 | x_refsource_MISC |
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CVE-2021-41269 (GCVE-0-2021-41269)
Vulnerability from cvelistv5 – Published: 2021-11-15 20:30 – Updated: 2024-08-04 03:08
VLAI
EPSS
VEX
Title
Unauthenticated remote code injection in cron-utils
Summary
cron-utils is a Java library to define, parse, validate, migrate crons as well as get human readable descriptions for them. In affected versions A template Injection was identified in cron-utils enabling attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Versions up to 9.1.2 are susceptible to this vulnerability. Please note, that only projects using the @Cron annotation to validate untrusted Cron expressions are affected. The issue was patched and a new version was released. Please upgrade to version 9.1.6. There are no known workarounds known.
Severity
10 (Critical)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/jmrozanec/cron-utils/issues/461 | x_refsource_MISC |
| https://github.com/jmrozanec/cron-utils/security/… | x_refsource_CONFIRM |
| https://github.com/jmrozanec/cron-utils/commit/cf… | x_refsource_MISC |
| https://github.com/jmrozanec/cron-utils/commit/d6… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jmrozanec | cron-utils |
Affected:
< 9.1.6
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CVE-2021-39160 (GCVE-0-2021-39160)
Vulnerability from cvelistv5 – Published: 2021-08-25 18:10 – Updated: 2024-08-04 01:58
VLAI
EPSS
VEX
Title
Code injection in nbgitpuller
Summary
nbgitpuller is a Jupyter server extension to sync a git repository one-way to a local path. Due to unsanitized input, visiting maliciously crafted links could result in arbitrary code execution in the user environment. This has been resolved in version 0.10.2 and all users are advised to upgrade. No work around exist for users who can not upgrade.
Severity
9.6 (Critical)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/jupyterhub/nbgitpuller/securit… | x_refsource_CONFIRM |
| https://github.com/jupyterhub/nbgitpuller/commit/… | x_refsource_MISC |
| https://github.com/jupyterhub/nbgitpuller/blob/ma… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jupyterhub | nbgitpuller |
Affected:
>= 0.9.0, < 0.10.2
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CVE-2021-39159 (GCVE-0-2021-39159)
Vulnerability from cvelistv5 – Published: 2021-08-25 18:20 – Updated: 2024-08-04 01:58
VLAI
EPSS
VEX
Title
Remote code execution in Binderhub
Summary
BinderHub is a kubernetes-based cloud service that allows users to share reproducible interactive computing environments from code repositories. In affected versions a remote code execution vulnerability has been identified in BinderHub, where providing BinderHub with maliciously crafted input could execute code in the BinderHub context, with the potential to egress credentials of the BinderHub deployment, including JupyterHub API tokens, kubernetes service accounts, and docker registry credentials. This may provide the ability to manipulate images and other user created pods in the deployment, with the potential to escalate to the host depending on the underlying kubernetes configuration. Users are advised to update to version 0.2.0-n653. If users are unable to update they may disable the git repo provider by specifying the `BinderHub.repo_providers` as a workaround.
Severity
9.6 (Critical)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jupyterhub/binderhub/security/… | x_refsource_CONFIRM |
| https://github.com/jupyterhub/binderhub/commit/19… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jupyterhub | binderhub |
Affected:
< 0.2.0-n653
|
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CVE-2021-39144 (GCVE-0-2021-39144)
Vulnerability from cvelistv5 – Published: 2021-08-23 00:00 – Updated: 2025-10-21 23:25
VLAI
EPSS
VEX
Title
XStream is vulnerable to a Remote Command Execution attack
Summary
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
Severity
8.5 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-06 19:37 UTC
CWE
Assigner
References
13 references
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Mitigation
Architecture and Design
Strategy: Refactoring
Refactor your program so that you do not have to dynamically generate code.
Mitigation
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.
Mitigation MIT-5
Implementation
Strategy: Input Validation
- 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().
Mitigation
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.
Mitigation MIT-32
Operation
Strategy: Compilation or Build Hardening
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).
Mitigation MIT-32
Operation
Strategy: Environment Hardening
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).
Mitigation
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].
CAPEC-242: Code Injection
An adversary exploits a weakness in input validation on the target to inject new code into that which is currently executing. This differs from code inclusion in that code inclusion involves the addition or replacement of a reference to a code file, which is subsequently loaded by the target and used as part of the code of some application.
CAPEC-35: Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files. When the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high.
CAPEC-77: Manipulating User-Controlled Variables
This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An adversary can override variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the adversary can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.