Common Weakness Enumeration
CWE-434
AllowedUnrestricted Upload of File with Dangerous Type
Abstraction: Base · Status: Draft
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
6008 vulnerabilities reference this CWE, most recent first.
CVE-2018-25158 (GCVE-0-2018-25158)
Vulnerability from cvelistv5 – Published: 2026-02-20 22:54 – Updated: 2026-04-07 14:03
VLAI
EPSS
VEX
Title
Chamilo LMS 1.11.8 Arbitrary File Upload via elfinder
Summary
Chamilo LMS 1.11.8 contains an arbitrary file upload vulnerability that allows authenticated users to upload and execute PHP files through the elfinder filemanager module. Attackers can upload files with image headers in the social myfiles section, rename them to PHP extensions, and execute arbitrary code by accessing the uploaded files.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/47423 | exploit |
| https://github.com/chamilo/chamilo-lms | product |
| https://www.vulncheck.com/advisories/chamilo-lms-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Chamilo | Chamillo LMS |
Affected:
Chamilo 1.11.8 or lower to 1.8
|
Date Public
2019-09-26 00:00
Credits
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CVE-2018-25114 (GCVE-0-2018-25114)
Vulnerability from cvelistv5 – Published: 2025-07-23 13:50 – Updated: 2026-04-07 14:03
VLAI
EPSS
VEX
Title
osCommerce 2.3.4.1 Installer Unauthenticated Configuration File Injection PHP Code Execution
Summary
A remote code execution vulnerability exists within osCommerce Online Merchant version 2.3.4.1 due to insecure default configuration and missing authentication in the installer workflow. By default, the /install/ directory remains accessible after installation. An unauthenticated attacker can invoke install_4.php, submit crafted POST data, and inject arbitrary PHP code into the configure.php file. When the application later includes this file, the injected payload is executed, resulting in full server-side compromise.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/44374 | exploit |
| https://www.oscommerce.com/ | product |
| https://raw.githubusercontent.com/rapid7/metasplo… | exploit |
| https://www.vulncheck.com/advisories/oscommerce-i… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| osCommerce | Online Merchant |
Affected:
2.3.4.1
|
Date Public
2018-03-30 00:00
Credits
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CVE-2018-25019 (GCVE-0-2018-25019)
Vulnerability from cvelistv5 – Published: 2021-11-01 08:45 – Updated: 2024-08-05 12:26
VLAI
EPSS
VEX
Title
LearnDash < 2.5.4 - Unauthenticated Arbitrary File Upload
Summary
The LearnDash LMS WordPress plugin before 2.5.4 does not have any authorisation and validation of the file to be uploaded in the learndash_assignment_process_init() function, which could allow unauthenticated users to upload arbitrary files to the web server
Severity
No CVSS data available.
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.openwall.net/full-disclosure/2018/0… | x_refsource_MISC |
| https://wpscan.com/vulnerability/9444f67b-8e3d-4c… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Unknown | LearnDash LMS |
Affected:
2.5.4 , < 2.5.4
(custom)
|
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CVE-2018-17936 (GCVE-0-2018-17936)
Vulnerability from cvelistv5 – Published: 2018-11-27 21:00 – Updated: 2024-08-05 11:01
VLAI
EPSS
VEX
Summary
NUUO CMS All versions 3.3 and prior the application allows the upload of arbitrary files that can modify or overwrite configuration files to the server, which could allow remote code execution.
Severity
No CVSS data available.
CWE
- CWE-434 - UNRESTRICTED UPLOAD OF FILE WITH DANGEROUS TYPE CWE-434
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://ics-cert.us-cert.gov/advisories/ICSA-18-284-02 | x_refsource_MISC |
Impacted products
Date Public
2018-11-27 00:00
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CVE-2017-20224 (GCVE-0-2017-20224)
Vulnerability from cvelistv5 – Published: 2026-03-16 01:28 – Updated: 2026-03-16 14:20
VLAI
EPSS
VEX
Title
Telesquare SKT LTE Router SDT-CS3B1 WebDAV Arbitrary File Upload
Summary
Telesquare SKT LTE Router SDT-CS3B1 version 1.2.0 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious content by exploiting enabled WebDAV HTTP methods. Attackers can use PUT, DELETE, MKCOL, MOVE, COPY, and PROPPATCH methods to upload executable code, delete files, or manipulate server content for remote code execution or denial of service.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.zeroscience.mk/en/vulnerabilities/ZSL… | third-party-advisory |
| https://cxsecurity.com/issue/WLB-2017120301 | third-party-advisory |
| https://www.vulncheck.com/advisories/telesquare-s… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Telesquare | SDT-CS3B1 |
Affected:
1.2.0
|
Credits
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CVE-2017-16772 (GCVE-0-2017-16772)
Vulnerability from cvelistv5 – Published: 2018-03-22 14:00 – Updated: 2024-09-17 04:23
VLAI
EPSS
VEX
Summary
Improper input validation vulnerability in SYNOPHOTO_Flickr_MultiUpload in Synology Photo Station before 6.8.3-3463 and before 6.3-2971 allows remote authenticated users to execute arbitrary codes via the prog_id parameter.
Severity
No CVSS data available.
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type (CWE-434)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.synology.com/en-global/support/securi… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Synology | Photo Station |
Affected:
before 6.8.3-3463
Affected: before 6.3-2971 |
Date Public
2018-03-22 00:00
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CVE-2017-16736 (GCVE-0-2017-16736)
Vulnerability from cvelistv5 – Published: 2018-01-12 02:00 – Updated: 2024-08-05 20:35
VLAI
EPSS
VEX
Summary
An Unrestricted Upload Of File With Dangerous Type issue was discovered in Advantech WebAccess versions prior to 8.3. WebAccess allows a remote attacker to upload arbitrary files.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://ics-cert.us-cert.gov/advisories/ICSA-18-004-02A | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Advantech WebAccess |
Affected:
Advantech WebAccess
|
Date Public
2018-01-11 00:00
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CVE-2017-16594 (GCVE-0-2017-16594)
Vulnerability from cvelistv5 – Published: 2018-01-23 01:00 – Updated: 2024-08-05 20:27
VLAI
EPSS
VEX
Summary
This vulnerability allows remote attackers to create arbitrary files on vulnerable installations of NetGain Systems Enterprise Manager 7.2.730 build 1034. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the org.apache.jsp.u.jsp.db.save_005fimage_jsp servlet, which listens on TCP port 8081 by default. When parsing the id parameter, the process does not properly validate user-supplied data, which can allow for the upload of files. An attacker can leverage this vulnerability to execute code under the context of Administrator. Was ZDI-CAN-5117.
Severity
No CVSS data available.
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://zerodayinitiative.com/advisories/ZDI-17-959 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NetGain Systems | NetGain Systems Enterprise Manager |
Affected:
7.2.730 build 1034
|
Date Public
2017-12-13 00:00
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CVE-2017-12332 (GCVE-0-2017-12332)
Vulnerability from cvelistv5 – Published: 2017-11-30 09:00 – Updated: 2024-08-05 18:36
VLAI
EPSS
VEX
Summary
A vulnerability in Cisco NX-OS System Software patch installation could allow an authenticated, local attacker to write a file to arbitrary locations. The vulnerability is due to insufficient restrictions in the patch installation process. An attacker could exploit this vulnerability by installing a crafted patch image on an affected device. The vulnerable operation occurs prior to patch activation. An exploit could allow the attacker to write arbitrary files on an affected system as root. The attacker would need valid administrator credentials to perform this exploit. This vulnerability affects the following products running Cisco NX-OS System Software: Multilayer Director Switches, Nexus 2000 Series Fabric Extenders, Nexus 5000 Series Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Unified Computing System Manager. Cisco Bug IDs: CSCvf16513, CSCvf23794, CSCvf23832.
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/102160 | vdb-entryx_refsource_BID |
| https://tools.cisco.com/security/center/content/C… | x_refsource_CONFIRM |
| http://www.securitytracker.com/id/1039931 | vdb-entryx_refsource_SECTRACK |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Cisco NX-OS |
Affected:
Cisco NX-OS
|
Date Public
2017-11-30 00:00
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CVE-2017-11154 (GCVE-0-2017-11154)
Vulnerability from cvelistv5 – Published: 2017-08-08 15:00 – Updated: 2024-09-17 00:26
VLAI
EPSS
VEX
Summary
Unrestricted file upload vulnerability in PixlrEditorHandler.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 allows remote attackers to create arbitrary PHP scripts via the type parameter.
Severity
No CVSS data available.
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type (CWE-434)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.synology.com/en-global/support/securi… | x_refsource_CONFIRM |
| https://www.exploit-db.com/exploits/42434/ | exploitx_refsource_EXPLOIT-DB |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Synology | Synology Photo Station |
Affected:
before 6.7.3-3432 and 6.3-2967
|
Date Public
2017-07-31 00:00
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Mitigation
Architecture and Design
Generate a new, unique filename for an uploaded file instead of using the user-supplied filename, so that no external input is used at all.[REF-422] [REF-423]
Mitigation MIT-21
Architecture and Design
Strategy: Enforcement by Conversion
When the set of acceptable objects, such as filenames or URLs, is limited or known, create a mapping from a set of fixed input values (such as numeric IDs) to the actual filenames or URLs, and reject all other inputs.
Mitigation
Architecture and Design
Consider storing the uploaded files outside of the web document root entirely. Then, use other mechanisms to deliver the files dynamically. [REF-423]
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.
- For example, limiting filenames to alphanumeric characters can help to restrict the introduction of unintended file extensions.
Mitigation
Architecture and Design
Define a very limited set of allowable extensions and only generate filenames that end in these extensions. Consider the possibility of XSS (CWE-79) before allowing .html or .htm file types.
Mitigation
Implementation
Strategy: Input Validation
Ensure that only one extension is used in the filename. Some web servers, including some versions of Apache, may process files based on inner extensions so that "filename.php.gif" is fed to the PHP interpreter.[REF-422] [REF-423]
Mitigation
Implementation
When running on a web server that supports case-insensitive filenames, perform case-insensitive evaluations of the extensions that are provided.
Mitigation MIT-15
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation
Implementation
Do not rely exclusively on sanity checks of file contents to ensure that the file is of the expected type and size. It may be possible for an attacker to hide code in some file segments that will still be executed by the server. For example, GIF images may contain a free-form comments field.
Mitigation
Implementation
Do not rely exclusively on the MIME content type or filename attribute when determining how to render a file. Validating the MIME content type and ensuring that it matches the extension is only a partial solution.
Mitigation MIT-17
Architecture and Design
Operation
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Mitigation MIT-22
Architecture and Design
Operation
Strategy: Sandbox or Jail
- Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs
In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.